Tire setup

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03-17-15, 01:31 PM

theoryguy3

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Tire setup

So I'm due for new tires and was wondering if I switch my current staggered setup on my 14 IS350 AWD with factory rims to one of the below options:

Option 1) All four tires at P275/40ZR18

Option 2) Fronts: 225/40/18 Rears: P275/40ZR18

Please let me know. Thanks.

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03-17-15, 01:41 PM

criticalgt

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Running 275 on 8.5" wheel would look ridiculous...do not do it! Not to mention it won't be functional...

Stick with the factory size on the factory wheels...

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03-18-15, 02:17 PM

Imprezario

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Quote:

Originally Posted by criticalgt

Stick with the factory size on the factory wheels...

True words. Wanna wider rubber - get wider rims.

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03-18-15, 09:47 PM

forum429

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You can not run 275/40R18 on the rear on a AWD vehicle.
You need to maintain your OD as close as possible.
There is a 1" difference between 275/40R18 and 225/40R18
You will destroy your diff.
You can run 265/35R18 on the rear with 225/40R18 but not 275/40R18.
You can run 275/40R18 all around because its the same OD.

Last edited by forum429; 03-18-15 at 09:56 PM.