Hi. I'm in the market for a used S and was considering a p85+ that comes with 2 sets of wheels (19 and 21). I heard about the tire issues that are prevalent with the 21s. Would they be alleviated with 19s? Is it ok to have 19s on most or all of the time or is the car designed to have 21s? Any issue with suspension or anything else? Lastly is p85+ with 19s> or = to p85? I dont want to be stuck with a money pit. Thanks for everyones help and advice.