255/55 18R wheels and tires

[Rmkuper]

Anyone running 255/55 R18 on 2001 GMC Yukon Denali? Stock wheels tires are 265/70 R17. I don't think it should be an issue. I have a guy selling them about 45min. Away for a good price.

 

[Fless]

What's the width and offset of the new wheels?

 

[Rmkuper]

What's the width and offset of the new wheels?

I am not sure I could have him measure I guess. They came off a 2006 GMC 1500

 

[Fless]

I am not sure I could have him measure I guess. They came off a 2006 GMC 1500

The size should be molded into the backside of the wheel. In the pic the offset is 31, these were stock on my '04.

 

[Fless]

I can't imagine you'd have any trouble with them, I run 265/65R18s on mine with a 25 offset, as long as the offset on yours isn't too far either way or doesn't put the rim closer to the wheel liner.

 

[Scott in AZ]

I am running 275/60-18s on a 2001 SLT that was previously 16 inch rims. I’m using later year OEM machined aluminum wheels. They work / fit / look/ ride great. GPS speed versus Speedometer match is dead-nuts on the money. This wheel setup should have been stock. I think 255 is a little narrow for 55 profile. Your actual speed will be a few MPH lower than your speedometer speed, and your measured mileage will be higher, I believe. If the wheels are a good deal and you upsize the tires later this seems like a good upgrade but only if the wheels are worth the whole price.