FORSCAN - Changing Tire size

[goodlettjr]

I went from 19" tires to 20", will it let me change?

Yes. It is a simple change but you will have to measure the circumference in mm.

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[Wiley Marmot]

Car came stock with 19" tires. I don't know anything else about them as I had them removed before I took ownership. I didn't keep them. What I put on with aftermarket rims with Goodyear Eagle F1 Asymmetric 265/35X20.

If you remember what brand/model your 19 OEM tires were; you can look them up (by size) at the tirerack.com. On that tire's page; under the pic/s of the tire are 3 or 4 tabs; one of which is "specs". Click on that and about 3/4 of the way down in the specs listings is overall diameter in inches. That's how I checked out my rear 305 Nittos in advance of purchase to see if they were going to be much of a change in diameter from the 265/35/20s my GT came with (and what you converted to). Good luck!