Tire size advise on staggered setup - replacing front 245/35/20 with 255/35/20

Old 02-25-2017, 11:52 PM
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alanz
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Tire size advise on staggered setup - replacing front 245/35/20 with 255/35/20

All,

I haven't been here for ages, good to be back.

Recently my low profile front tires finally gave up on after 3+ years.

I have Vossen CV3, specs are 20x9.0/20x10.5, +32/45 offsets.

My rear tire is Michelin PILOT SPORT A/S 3+, 285/30ZR20, they are pretty new, so I want to match the rear with same model. What I had was 245/35/20, however Michelin doesn't carry this size any more. The closest size I can find is 255/35/20, which should have same diameter but wider? For lack of the expertise, I want to make sure this size will continue to work with my setup without issues and if it's going to affect the look at all?

Thank you so much in advance.
Old 02-26-2017, 12:51 AM
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blnewt
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It will be a bit taller than your 245s (about a 1/4") but since you have a RWD you won't have any issues running that combo.
Old 02-26-2017, 01:32 PM
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alanz
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Originally Posted by blnewt
It will be a bit taller than your 245s (about a 1/4") but since you have a RWD you won't have any issues running that combo.
I have AWD xS..is it still going to be ok?

The difference in diameter between F/R (255/35/20 & 285/30/20) is 0.3", that's 1.1% difference. Still within Infiniti's tolerance?

Thanks!

Last edited by alanz; 02-26-2017 at 01:54 PM.
Old 02-26-2017, 02:00 PM
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alanz
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Originally Posted by alanz
I have AWD xS..is it still going to be ok?

The difference in diameter between F/R (255/35/20 & 285/30/20) is 0.3", that's 1.1% difference. Still within Infiniti's tolerance?

Thanks!
Haha, I just did a search and one of your posts from 2012 turned up:

Yep, as long as the diameter is within +/- 3% of the stock diameter there should be no problem and as long as the F&R are within 3% of each others' diameter.
Old 02-26-2017, 07:20 PM
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blnewt
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Funny you found that. There has been revised info since then, with AWD there has been issues at speeds over 80mph when the variance exceeds 1% Front to back. If you keep all the tires the same diameter there is more leeway there, as far as being as much as 3%, not sure there regarding AWDs, but a bit over 1% having all 4 tires the same shouldn't be a problem.


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