17" tire gps mph?

444 Views 2 Replies 3 Participants Last post by ryan69, Jun 23, 2014

hemi deep

Discussion Starter · Jun 20, 2014

I was going to get my trucks computer adjusted for my new 33" tires. I checked my speed at 120k(via GPS), it's now only 3k off. Any stock wheeled 17" owners out there able to GPS on cruise at 120k?

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ryan69

· #3 · Jun 23, 2014

Not sure, but after I put on my 33's I was 3kmh over just like you are.

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