I'm planning to upgrade my car from 17" stock wheels to 18'' wheels and tires.
I'm trying not to increase my finder gap. The 235/45/18 tires are close to the original stock finder gap distance.
Will the 235/45/18 and 18x7.5 wheels work on a 03 sedan?
Also Iv'e read here that 235/45/18 are not common tires and are hard to find.
My next choice in size is the popular 225/45/18 but this size will increase my finder gap.
Any suggestions? Should I lower my car? How much will it cost to lower it without sacrificing the ride?

 

245/45/18

 

I wouldn't recommend a 245/45R18 unless he wants to go with a taller overall tire. On average, a 245/45R18 is about 0.5" taller than the stock 215/55R17. It doesn't sound like a lot, but visually it is. It also means the car will be at least 1/4" higher off the ground which is something most of us don't want. The Goodyear GS-Ds are a whopping 0.7" taller than it's 215/55R17 size.

 

245x45x18 works perfect on the G35. Here is a picture of my G35 with this size tire. It is the recommended size tire for the sedan.

If you do a search you will see it is the recommended size for the sedan for a 18x8.