Hello! I am currently running 18x8.5 +45 wheels on my car, when I get new tires I want a bit of stretch. What tire size should I look for? I don't want too much just enough to where it looks good. Thanks guys.
225 40 if you want some mild stretch. I don't recommend going beyond that is because the 8.5 isn't a super wide rim. The whole point of the Germans "stretching" tires back in the day is to get the tread inside the wheel arches on some really wide rims or aggressive offsets. You can run as narrow as a 205...but the side wall will be so thin...it'll look really bad on a Mk7. I had 215's on some 17x9 back in the late 90's.
Here are some 205's on my Corrado back in around 2000. I think the wheel was an 8.5...but the ET was around 20 after adding the wider lips. I had to roll and slightly pull the rear arch. Different brand tires also stretch different.