I am thinking about getting a set of 18x10 wheels for my 300m on the super cheap from my work. They are band new just been sitting in the back. But I am wondering if that is too wide for my m. If they are not what size should I put on them.
Anything can be done, but in general folks have needed to roll their quarter panels to fit genuine SRT wheels (20x9 with a low offset). 18x10 is probably too wide. 20x9 SRT wheels tend to be very close to the spring perches as it is.
2002 Chrysler 300M Special - Deep Sapphire Blue/Storm Gray Metallic - 142,000 miles
2016 Jeep Wrangler Unlimited Sahara | 2020 Dodge Durango R/T AWD | 1929 Ford Model A Tudor
Other than the obvious problems mentioned, you have to make sure that the tire itsef is wide enough for the rim. A 10 inch rim probably wants a 300mm tire in order to seal properly. I haven't dabbled with that for years now, but when I was in high school and we were looking to run the widest tires possible, I know some people bought rims that were so wide that the tires didn't fit properly and they were hard to get the bead to pop into place. More often though people would want to run a wide tire on a narrow rim, which also caused a problem.