Too early for me to know. If given the choice I would have purchased 20" for the bad roads here in Canada. I did buy 19" winter tire and rim package for winter.
I too had that concern-being in Northern Vermont.....Did you put a 19" wheel package on Prestige package? I've got 22" and was concerned about putting smaller rims on the larger rotors and calipers....Also wondered if the sensors are giving you accurate reading?
I'd say it depends on the quality of roads you travel on and how careful/concerned the drivers are when it comes to curb rash when parking, etc. Even though I'm in Arizona where pot holes are rare and I'm anal about where I park, I still got an Allstate Wheel and Tire Plus protection package just in case.
For what it worth, I recently swapped my winter set to the summer (22") set. What I can tell you is that it was a very difficult job. Maybe the dealer over-torqued the wheel nuts but it would have been impossible for me to change on the side of the road. We used about 4 feet of breaker bar and could not break many of the nuts free. We had to use an impact gun. Also those 22" tires are heavy! I was disappointed with lack of spare tire but now could not imagine having to do a roadside change and a little more content with the tire mobility kit (although still concerned about its limitations).
As long as your rim and tire packages match the OEM specs in circumference, you shouldn’t have a problem with speedometers and computers for anti lock.
The different wheels/tire combo options have to be same circumference (or close) to keep the speedo and anti lock brakes in calibration. That 22" setup is going to be about the same height as the 19" setup, but more rim and less tire.
If you have 3 or 4" of extra rim height then you have to use much lower profile tires (short side walls - the part you see when you look at a tire on a car)) to keep the dimensions the same. The problem is that much shorter side walls is much less cushion from the tire for the wheel when you hit a pothole. How much sidewall determines how much that sidewall can flex and absorb impacts. The shorter sidewalls have to be much stiffer and thus let much more impact energy through to the rim. Main risk being bent rims, main pain being rougher ride all the time. It's a very real risk here in the freezing parts of the country. Not so much south or far west where it doesn't freeze and bust the roads up.
Plus sizing is nice…. Does it consider rolling Dia… that’s key! Bigger rubber in the wheel well is better …. How big can you go before rubbing or fended interference happens
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