19" vs. 18" Wheels/Tires

[Johnny Danger]

Originally Posted by smshirk

The tire calculator showed that my 18 x 11 with 295 30s would fit on my 986S. It wasn't even close. If I used a wide enough spacer to get far enough away from the shock tower, the tires stuck way past the fender, plus the 295 30 diameter looked weird on the stock ride height. I've had this brand new set of Gemballa wheels and tires sitting in the basement for 3 years since selling my 996 and finally tried them yesterday.

I have a set of 18" CCW race wheels Complete Custom Wheel - Wheel Profiles in Boxster offsets that are very light but won't accept center caps. I've been trying to figure out a way to attach some caps without screwing the wheels up. They have holes drilled all around the center and the outside to reduce weight, so I'm thinking it wouldn't hurt to drill and tap a set of center caps in the middle. Does anyone have an opinion?

What wheel/tire calculator are you using ?? There is no way that an 11 inch wheel will fit a 986 boxster . Let alone with a 295 tire .