I have GMC terrain SLE2 trim 2015 model with R17 225/60 tyres as manufacturer recommendation. When I bought this car, it was installed with 275/40 R20 tyre. However, now its time for for tyre change, Whats the recommended tyre size with R20 rim ?
Also note Top Level Trim Denali GMC terrain 2015 has 245/45 R20 tyres. So I feel it should be Ok to put same tyre size. Please share your thoughts.
This is a useful resource when choosing tire sizes:
Comparing the two sizes you mentioned gives this:
Note that the R20 tire, overall, is just a bit larger than the R17 tires. So clearance-wise it should not be a problem.
You do realize, however, that the number following the "R" is the rim or wheel diameter and you cannot put R20 tires on a 17" rim or R17 tires on a 20" rim. So to change sizes you will need to replace your rims/wheels.
