Jagdpanzer

Does anyone know if putting the 21 inch G65 wheels and tires on a G63 running 20 inch rims, messes with the speedometer? I know the rubber height might make up for the difference in rim diameter, but wasn't sure if it is right on, or would need a speedometer calibration through the computer.

I really want the 21 inch G65 polished chrome rims. Or something equivalent that looks as nice. IF anyone has any nice wheel ideas that are comparable to the G65 chrome wheel. Please let me know.

invictusmaneo

It will depend entirely on tire size--if you check which tires you intend to purchase on tirerack, they will give you the actual outside diameter for that brand and type of tire in your specified size under the specs tab to compare to your current set. Different brands/types of tires can vary a few percent even with the same listed size, so I would check.

I am running 33" tires on my truck and have tried multiple times to find the location in STAR to change the speedo/odo to no avail. I have changed the transmission and transfer case to adjust the traction control and trans as close as possible, but it still isn't perfect. If anyone knows step by step how to do the speedo I am interested to hear as well.

Jagdpanzer

Totally understood, thanks. I was even thinking of looking at some Trueforged and just sticking with the 20 inch rims to have a little better ride and not worry about the diameter issue. Plus a little better curb shot and pot hole protection. Thanks Again

GKID

I use below site because i tend to change the tire size on most my cars as i did on my '16 G500 - now running 285/55R19 and speedo is bang on as opposed to showing highere speed than actual

https://www.tacomaworld.com/tirecalc

Jagdpanzer

Thanks