Oversize tire fitment

BILL WOODING

MEMBER
2010 FORD RANGER
4.0L
V6
4WD
AUTOMATIC
30,000 MILES

What is the largest non stock oversize tire I can fit on my stock non lifted, truck listed above XLT model with 15" rims, without any scrubbing. 30x9.5, 31x10.5, smaller? Thanks!

Thursday, September 24th, 2020 AT 11:31 AM

4 Replies

STEVE W.

MECHANIC
12,977 POSTS

The tires you have now are the wrong ones if they are 15" That truck should have 255/70-16 on it from the factory. Upsizing to P255/70R16 on stock 16" rims will work and give you a 31.5 tire without a lot of problems or rubbing. Anything larger will rub and hit on a stock truck. Plus as you go larger you run into issues with the speedometer, ABS and gearing stress that it creates.

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Thursday, September 24th, 2020 AT 12:03 PM

BILL WOODING

MEMBER
3 POSTS

Thanks Steve, actually the late model XLT's came stock with 15" with option of 16", 15s are on my manufacturer door tag, 235/75r15. The Sport I think came with 16" standard. I'd have to agree with you, I don't think I want to go to big with the tires and stress the vehicle. I'm currently looking to get as close to a 16" 255/70r16, (translates to 30.06 x 10.4) as possible or your saying 31.5 or something close should translate to the 15" rim without scrub? Currently the speed is actually showing higher than the speedometer shows by about 4 mph so not worried about that, I can have it calibrated. Thanks!

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Thursday, September 24th, 2020 AT 2:09 PM

STEVE W.

MECHANIC
12,977 POSTS

Hmm, My tire distributor doesn't show the 15" rims, only a 16 on the XLT 4X4. Not a big deal though, as the chassis is the same going to a 31.5 tire shouldn't be an issue as it fits with the 16" rim. The 255/70-16 was an OEM tire size as well so those would be a bolt on and should be in the tire calibration chart in the vehicle already as an option.

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Thursday, September 24th, 2020 AT 2:35 PM

BILL WOODING