2007 Chevy Tahoe -- Switching form 17 inch to 20 inch wheels?

I was considering switching from OEM 17-inch wheels on my 2007 Tahoe to 20-inch OEM wheels. Using an on-line tire size calculator, the circumference difference is about 1%. Is the computer/speedo different in a Tahoe shipped with 17 inch wheels versus a Tahoe shipped with 20 inch wheels or is it close enough that GM keeps the computer/speedo the same for either wheel size option?2007 Chevy Tahoe -- Switching form 17 inch to 20 inch wheels?
They are not the same.You will need to have the service dept recalabrate the new size tires to the BCM of your tahoe. They will also have to recalabrate the onboard tire pressure system of the new wheels. Best of luck.2007 Chevy Tahoe -- Switching form 17 inch to 20 inch wheels?
I had one come in the shop the other day with 20 in wheels . We have a Teck 2 scanner used at Chevy dealerships and with that scanner we set the spedo. One thing to remember if your Tahoe is equipt with a tire presser monitor you will always see a tire presser fault . I don't work on to many 07 cars Yet but i think these presser sensors are in the valve stem. So take it to a Chevy dealer to avoid these common mistakes.