Bolt pattern, Rim & Tire size info

[Molson]

Please refer to this article for a complete guide to rim size, tire size and bolt pattern info...

Here is additional information you might find useful.
Okay, factory lug size is 5 x 115mm. You can also use 5 x 114.3mm or 5 x 4.5" (same thing). Though some have mentioned vibration problems with the 114.3mm rims and many others have had no problems what so ever. If you use 114.3mm rims you should also get hubcentric rings to fit them on with and check you lug nut torque a little more often.

What are hubcentric rings???

Originally posted by "mfuller"

Hub-centric and lug-centric are two completely different things, yet they are both important to proper wheel fit.

Hub-centric means the centerbore (the large hole in the middle of the wheel) is machined to precisely fit on the hub of the vehicle. Now, since it'd be expensive to precisely machine the centerbore of every wheel to fit every car, manufacturers usually provide 1 or 2 centerbore sizes and rely on hub-centric rings to "shim" the certerbore around the hub for a snug fit. Why is this so important? The hub is meant to bear the stress of vehicle mass, not the lugs!

Lugs and lug nuts (or lug bolts on vehicles with threaded hubs) are designed for one thing - to hold the wheel onto the hub. That's it. Lug-centric means the lug holes in the wheel precisely match up to the lugs (or threaded lug holes) on the hub. If they are even the slightest bit off, it becomes difficult to maintain equal tightness on each lug, because when you torque a lug nut (or bolt), the torque center (not sure if that's the correct term, but anyone who has engineering knowledge knows what I'm referring to) is not precisely on the center of the lug - this is why it is so vital to check lug nuts for tightness on wheels without the proper bolt pattern. If you can't get equal clamping force on all the lugs, the possibilty for lug or lug nut failure is much greater.

Having a hub-centric wheel (or a wheel with hub-centric rings) is more important than a lug-centric wheel, but personally I wouldn't take one without the other, especially on the racetrack.

Just my two cents.

Originally posted by "Grouch"+--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE ("Grouch")</td></tr><tr><td id='QUOTE'>

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE ("ad-dajjaal")</td></tr><tr><td id='QUOTE'>No.... Thats a +34mm offset. The Alero takes closer to a +42 and thats on a 7.5" wide wheel. a +42mm on a 7.5" wide is a 5.40 back spacing which leaves 2.10" of the wheel sticking past the mounting point (hub). The wheel you are talkin about leaves 3.16" sticking out past the mounting point (hub). so the wheel would stick out 1.06 inches farther than a 18x7.5 wheel. Not only that but it would also stick an extra 1/2 inch into the fenderwell area which would prolly rub your struts.[/b]

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE ("Naich")</td></tr><tr><td id='QUOTE'>9 inch wide rims are too big, stick with 7.5 or 8 max...[/b][/quote][/b][/quote]


</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE ("Grouch")</td></tr><tr><td id='QUOTE'></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE ("SonicAlero")</td></tr><tr><td id='QUOTE'>Hey guys, will 20's fit with no problem, or would you have to do some modifications? If so, what would you have to do? Also, is there any negative/positive driving or performance effects from big rims? N E info would be greatly appreciated![/b][/quote]

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE ("nnewton123")</td></tr><tr><td id='QUOTE'>i highly doubt its possible without doing some pretty major suspension work. 20" rims are wide (9+" in most cases), our cars really don't have room to take anything wider than 8". Even 8" is a pretty tight fit, and needs the correct offset. running tires at the same size is also out of the question. i'm pretty sure no one makes 225/30-20 tires, and you sure as hell wouldn't want to drive on them either. you'd probably end up with something like a 245/35-20 being the closest to stock as you can get. That tire is still about 7.5% off which is more than you would want to have. I dont' mean to discourage you..... it can be done, and has been done, but unless you want to put in quite a bit of money, 19's are much much more practical. 225/35-19's are almost a perfect match. They probably will ride really harsh as there is very little sidewall, but you should be able to find wheels that fit.[/b][/quote]

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE ("Layd2reST")</td></tr><tr><td id='QUOTE'>20's will not fit on an alero without rebuilding your suspension. I moved my suspension in 1 3/4 inches to compensate for the clearance problem. You can do 19s with Eibachs cause 19s are 7.5" wide. A 20 at the smallest is 8.5" wide. I had to move my suspension in so much cause i lay my car on the ground and had to make sure id clear the inside of the fenderwell also. I still rub slightly when im all the way down. Ill be doin some trimming soon and more modding and cutting to put 22s in the back and 20s in the front. Should be done by the first of next year hopfully. The smallest 20" tire is 245/35zr20. Which is still kinda meaty. Id recomend doing the 19x7.5 with Eibachs if you dont want to rebuild your suspension and have adjustable suspension as well.

peace.......Robbie

Owner of "AfTeRmAtH"[/b][/quote]

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE ("nnewton123")</td></tr><tr><td id='QUOTE'>just like robbie said... the only reason you can fit 19's on an alero stock is becase #1. 19's come in 8" or less width. #2. You can get tires that are nearly the exact same diameter and the exact same width as the stock tires (although you have almost no sidewall).

both of those points don't work with 20's. #1. the rim is too wide. #2. the tires are slightly too big diameter, and quite a bit too big in width.

You can go with eibachs or h&rs.... and then put on 225/40-18 or 225/35-19 tires. Will look totally sweet either way. 19's will give you bragging rights over a lot of people though. [/b][/quote][/b][/quote]


</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE ("Grouch")</td></tr><tr><td id='QUOTE'></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE ("turboalero")</td></tr><tr><td id='QUOTE'>here it is again

http://www.onlinetires.com/main.html

http://www.1010tires.com
http://www.1stopcustomwheels.com/
http://www.800wheels.com
http://www.aaarims.com/
http://adaptivestrategies.com/
http://www.afftw.com
http://www.autoimaging.com
http://www.aktusa.com/wheels/wheels.html
http://www.azcwheels.com
http://www.b17a.com http://caraddons.com/Catalog/subpag...stom_wheels.htm
http://www.custom-wheels.com/cfwdpage.htm
http://www.customwheelsdirect.com/
http://www.customwheelservice.com
http://www.customwheelsmarket.com
http://www.cruisin-gold.com/
http://www.discounttire.com
http://www.dmtechamerica.com/
http://www.dtcmotorsports.com
http://www.ebay.com
http://www.emowheels.com/emo_site/c...r/wheelpage.asp
http://www.englishcustompolishing.com
http://www.finoswheels.com
http://www.flipstires.com/Wheels/body_wheels.html
http://www.german-wheels.com
http://www.gmpperformance.com/Default.htm
http://www.grouptyre.co.uk/asa_wheels.htm
http://www.gtautosports.com
http://www.goodroads.net
http://www.heavyreaction.com
http://www.hubcap-tire-wheel.com
http://www.importhookup.com
http://www.imoto.com
http://www.infinite-motorsports.com
http://www.inlinefour.com
http://www.jdmhondaparts.com
http://www.king-motorsports.com
http://www.metrowheels.net
http://www.mileone.com/mrtire/wheels.htm
http://www.modacar.com
http://www.onlinetires.com
http://www.overboost.com/obs/
http://www.ozzytyres.com.au/
http://www.precisioninstallations.com
http://www.rim1.com
http://www.rimstock.com
http://www.salesco.com
http://www.savastire.com
http://www.shinestreet.com/wheels
http://www.speedywheels.com
http://www.superbuytires.com
http://www.superlite-wheels.com/
http://www.tirepros.com/wheels.html
http://www.tirerack.com
http://www.ultrawheel.com/
http://www.usacomp.com/Road.htm
http://www.victoriatire.com
http://www.washingtontire.com
http://wheelfind.com/selling/
http://www.wheelsmarket.com/
http://www.wheelmart.com
http://www.wheelmax.com
http://www.wheeloptions.com
http://www.wheelsone.com
http://www.wheeltech.com/main2.html
http://www.wheelwarehouse.com
http://www.wholesalewheel.com
http://www.wholesalehyperformance.com
http://www.whalentire.com
https://www.woodfins.com/index.ASP

enjoy [/b][/quote][/b][/quote]


</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE ("duesergirl")</td></tr><tr><td id='QUOTE'></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE ("Grouch")</td></tr><tr><td id='QUOTE'>Tire size/Speedo Error calculator:
http://www.miata.net/garage/tirecalc.html[/b][/quote]

This is a really handy little tool!

Backstory: Moved last week from MO to FL. My hubby and I drove my car and my parents drove their van. In the process we found out that when I thought I was going 75, I was actually going more like 72. Dad and I discussed this, and decided that my car was originally meant to have the standard 16 wheels, but when the rental company that had it first took it, they opted to lower cost and switch to the 15 hubcaps.

Now here's where the handy tool comes in. I checked using the 16s as stock tire and the 15s as new, and according to the calculator, if I thought I were going 60, I would actually be going something like 57. So it looks like we were right![/b][/quote]


</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE ("King Asoka")</td></tr><tr><td id='QUOTE'>ok, i got a question about offset. What is the min/max range for offset. What i mean is what would be the most offset and the least offset we can use for our aleros?
:mrgreen:[/b][/quote]


</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE ("Molson")</td></tr><tr><td id='QUOTE'>about +36 to +42[/b][/quote]


<!--QuoteBegin-"mfuller"@
<!--QuoteBegin-"King Asoka"
thanx molson. Ok so let me get thi9s straight, the bigger the offset the farther out the tire will stick?[/quote]
The tire will stick out more with less positive offset; i.e. a +35mm offset rim will stick out more than a +42mm offset rim.[/quote]

can someone post in list form the size of tire needed for each rim ie:

Rim - Tire Size
Rim - Tire Size
Etc
Etc

as well please include the overall diameter of the wheel with stock rubber on please.

[Sundayalero]

Originally posted by AleroSS@Jun 8 2004, 09:43 AM
can someone post in list form the size of tire needed for each rim ie:

Rim - Tire Size
Rim - Tire Size
Etc
Etc

as well please include the overall diameter of the wheel with stock rubber on please.

It depends on which stock wheel and tire combo that you have...
This is a great site for overall wheel and tire size questions (as far as overall diameter):

http://www.miata.net/garage/tirecalc.html

[Naich]

Stock 16" GLS rims are 16x6.5 (or maybe 16x7?) and come with 225/50/16 tires.

Stock 15" GL rims are 15x6.5 and come with 215/60/15 tires.

Not sure what kind of rims the hub cap rims' tires are.

For 7" wide rims, get 215-225 wide tires
For 7.5" wide rims, get 225-235 wide tires
for 8" wide rims, get 235-245 wide tires (but 245 could cause rubbing with some rim offsets so be careful)

Question about centor bore.

The stock wheel has a CB of 70.3. In searching for wheels, do i need to have the exact same, or is it safe to go below OR above that number. I'll also note that i'm a pretty aggressive driver, so finding the safest wheels and maintaining their longevity are my main priorities, but I guess that goes without saying for all.

[Sundayalero]

Originally posted by Sportalero@Jun 27 2004, 11:38 PM
Question about centor bore.

The stock wheel has a CB of 70.3. In searching for wheels, do i need to have the exact same, or is it safe to go below OR above that number. I'll also note that i'm a pretty aggressive driver, so finding the safest wheels and maintaining their longevity are my main priorities, but I guess that goes without saying for all.

Almost all aftermarket wheels are going to have a center bore that is larger than 70.3 so they can sell the wheels for a variety of cars. Just make sure that you buy "hub centric rings" for the wheels you buy, and you should not have any problems.

[Youngblood77]

Ok, As some of you may have read, I'm purchasing vulgar's rims. They don't have hubcaps that cover the lugs, So I'll be needing a set of chrome lugnuts and lockers to match. I can get a deal on McGuard lockers because we built an addition on their facility in Buffalo. :thumbsup:


My question is:

What size are the stock lugs?

I realise these can be bought @ any Auto Zone, but has anyone bought these online before? If-so, where's the cheapest place to get'm?

Thanks y'all. B)

Originally posted by Youngblood77@Dec 17 2004, 08:37 PM
Ok, As some of you may have read, I'm purchasing vulgar's rims. They don't have hubcaps that cover the lugs, So I'll be needing a set of chrome lugnuts and lockers to match. I can get a deal on McGuard lockers because we built an addition on their facility in Buffalo. :thumbsup:


My question is:

What size are the stock lugs?

I realise these can be bought @ any Auto Zone, but has anyone bought these online before? If-so, where's the cheapest place to get'm?

Thanks y'all. B)

The stock lug nuts are a 19mm.
And have a thread pitch of 12X1.5.

[Youngblood77]

Thanks Cocoa, truly appreciated.

Originally posted by Youngblood77@Dec 17 2004, 10:22 PM
Thanks Cocoa, truly appreciated.

:thumbsup:

[Molson]

this can go to the top.

[natedawg9640]

k... so i don't know how to shop for tires... what sizes fit what... what each number in the code means (225/whatever/whatever)... i found a pair of 18's 7.5" wide... what tire size am i lookin for... somewhat low pro...

[AlbinoMonkeyRat]

^ using the information posted in this thread, you should go with 235-40-18 tires.

235 = width of the tread (millimeters)
40 = percent of the tread measurement that makes up the height of the wall
18 = measurement of the wheel (inches)

[Oldsman]

FYI............the largest diameter tire that can go on the front is 26"

And with the right offset a 255 will fit no problem.

i am running the OSV rims and tires from Alero and Intrigue

front...... 18x 7.5 with 255/40r18

rear...... 19x8 with 255/40r19

[SouthDakotAlero]

So what are the chances a 19" x 8.5" rim with a +38 offset will fit in the back?

[kwhauck]

Originally posted by SouthDakotAlero@Sep 12 2005, 10:25 PM
So what are the chances a 19" x 8.5" rim with a +38 offset will fit in the back?

Quoted post

well from my quick calculations you could probably fit em in the back although not in the front......

[kwhauck]

oh and when i was looking for my new wheels i used this is a reference.......

wheel offset calculator

[Oldsman]

Originally posted by SouthDakotAlero@Sep 12 2005, 10:25 PM
So what are the chances a 19" x 8.5" rim with a +38 offset will fit in the back?

Quoted post

would work for the rear but would need a stiff suspension to prevent tire hitting wheel well

[SouthDakotAlero]

Originally posted by turbo-alero@Sep 13 2005, 04:51 AM
oh and when i was looking for my new wheels i used this is a reference.......

wheel offset calculator

Quoted post

Do you know the stock specs off hand?