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Upgrading 20" OEM Tire...Fitment Question

disturbed932

Member
Apr 3, 2014
49
5
Huntsville, AR
Time to upgrade the stock (and poor treadlife) Goodyear Eagle F1 Asymmetric 5 "All-Season"

Proposing upgrading to Michelin CrossClimate2 with great reviews, treadlife, and all weather capability. The closest size available is 245/45/20

The Induction Wheel is listed at 9.5" width, however the Michelin tire specifies a 7.5-9" rim width. Is there any possibility of risk of mounting this tire on a 9.5" rim? Tire newbie here. Would it create wear issues by trying to stretch this or am i overthinking this?

Stock Tire
255/40/20 Diameter 28"

245/45/20 Diameter 28.6"

Ran tire size calculators and am aware of the slight speedometer differences. However, it is only 2.5% greater in diameter which falls within the recommeneded +/- 3% difference in diameter when changing tires.
 

jmaddr

Member
Mar 29, 2019
949
958
Florida
It will fit just fine. Your indicated speed will be a little slower than actual. I'd rather it read over then under personally but still, at 70mph, it will only read 1.5 mph under your actual speed. Not a big deal but you certainly need to know.
 

disturbed932

Member
Apr 3, 2014
49
5
Huntsville, AR
It will fit just fine. Your indicated speed will be a little slower than actual. I'd rather it read over then under personally but still, at 70mph, it will only read 1.5 mph under your actual speed. Not a big deal but you certainly need to know.

Thank you. At 70mph, the new tire would read about 1.8mph according to tiresize.com.

Regarding the wheel rim width, this presents no issue at all with stretching the tire too far beyond what it listed as recommended rim width of 7.5-9"? When the induction wheel is 9.5"
 

OCJeff

Ordered 6/4 MYLR5 White/White/20”
Feb 18, 2021
451
398
SoCal (RSM)
Your rim will be more exposed and more likely to get curb rash should you even come close to touching a curb.
 

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