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      03-03-2012, 06:13 PM   #1
S65NAPWR
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Noob Question.

Hi All-

Does anyone see an issue with 265/30/19 (Front) and 275/35/19 (Rear) set-up? These are on PSS tires.
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      03-03-2012, 06:15 PM   #2
ThunderMoose
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Quote:
Originally Posted by PLMV8 View Post
Hi All-

Does anyone see an issue with 265/30/19 (Front) and 275/35/19 (Rear) set-up? These are on PSS tires.
Do you mean 265/35 and 275/30? I am pretty sure you'll have no issues.
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      03-03-2012, 06:20 PM   #3
S65NAPWR
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Actually, you're seeing it right. 265/30/19 Front and 275/35/19 Rear. Sort of odd, but I still did it. Thoughts? Any issues?
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      03-03-2012, 08:42 PM   #4
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Quote:
Originally Posted by PLMV8
Hi All-

Does anyone see an issue with 265/30/19 (Front) and 275/35/19 (Rear) set-up? These are on PSS tires.
Why would you do that?
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      03-05-2012, 11:45 AM   #5
ben@tirerack
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Got your email, but I'll reply here for reference of anyone else who's interested. Both sizes are generally ok to run, but it is a somewhat unusual combination.

Stock Diameters (nominal, varies slightly by brand):
245/35R19 Front = 25.7"
265/35R19 Rear = 26.3"
Rear tire 0.6" taller

Your diameters:
265/30R19 Front = 25.2"
275/35R19 Rear = 26.5"
Rear tire 1.3" taller

So the difference in diameter is .7" more than stock.

In theory, changing the diameter difference can affect the efficiency of traction control and ABS. In practice, the M3 has not seemed to be all that sensitive about this. Many guys are running square setup, which is a similar amount of change (.6" less difference than stock) without any notable issues.

Still, you should stay aware of the fact that traction control/ABS may not be working perfectly and drive with a little extra margin for error until you get a feel for how it reacts.

Visually, you may see a little more rake with the back of the car sitting up a bit higher and the front looking lower.
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