Tire fitment

Egh..I'm just gonna get 4x same size I had the 205/60s are a great deal but I honestly don't need snow tires as I just had it in snow n ice for the 1st time on balding summer tires

So I have just ordered new wider and larger rims in hopes of catching a little more traction of the line. My question is though what tire size will actually fit the rim? Any tires i have replaced in the past have been either same size or ever so slightly larger and it didn't make a real difference. Sarkari Result Pnr Status 192.168.1.1
Rim sizes are 10.5x20 in rear and 8.5x20 front. Stock tires are all 225/60/18. Goal is to keep the same circumference as stock tires and use a lower profile tire. Advice from anyone with more experience in this department would be much appreciated.
Edit: car is 2006 chrysler 300c for those that wanted to know

nqtelive said:

So I have just ordered new wider and larger rims in hopes of catching a little more traction of the line. My question is though what tire size will actually fit the rim? Any tires i have replaced in the past have been either same size or ever so slightly larger and it didn't make a real difference.
Rim sizes are 10.5x20 in rear and 8.5x20 front. Stock tires are all 225/60/18. Goal is to keep the same circumference as stock tires and use a lower profile tire. Advice from anyone with more experience in this department would be much appreciated.
Edit: car is 2006 chrysler 300c for those that wanted to know

Click to expand...

Ummmmmm ok ?
Funny thing I owned that exact car and when I put big rims on it , it ruind every steering and suspension component on that pos car and it ride terrible on low profile tires ..
Foolish move , if you can return and get your money back..do so, and don't run anything larger than a 19 on that car..you want as much sidewall as possible . It's not a performance or sports car in any terms . That hemi and slushbox trans are turds. Not to mention areo dynamics of a brick and handling like a limo