I am looking at buying a 2011 XKR It will be my first Jaguar so I am not very schooled on these amazing vehicles. I really like to extract some extra HP what is the most common route without getting into internals to gain extra HP out of these cars? Also what is the widest rims and tire combo and offsets if known. I would like to run 19s or 20s with a nice wide rear tire tucked inside the fenders. I have had a few C6 Z06s and C6 Coupes also Porsche 997.2S Currently have a 2010 BMW 650. Looking forward to joining the Jaguar family.

 

First, I would read up on the specs of the car. The XKR comes stock with 19s and 20s are optional, so you don't need to do much to get your wheel choice. Second, The XKR is already supercharged, so I would drive it a while before deciding whether or not to increase the HP - The rear wheels spin readily enough as it is. If you must upgrade it, you can find specialist who make supercharger modifications.