986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - What did you do with/to your Boxster today?

Rayrevolver · 09-04-2020, 07:47 AM

Overthinking is what I do best!

Been mulling what tire sizes to get for my new-to-me Cayman S II 18" wheels to swap out my 17" wheels on a 2001 Base.

Just ordered these sizes:
215/45/18
245/40/18

They are .6" and .7" inches larger in diameter than my current tires. 25.7" is just inside the 3% rule.

Why did I choose these over the more accepted 225/255 setup? Well, going from 17s to 18s I liked the extra sidewall height. I also like the little longer gearing for high speed cruising. With the lighter wheel/tire combo in the rear maybe the torque loss due to gearing will even out.

Pics/Review to follow next week. Hopefully the rears will not hit the fender during high loads... we shall see!

09-04-2020, 07:47 AM	#5942
Rayrevolver Registered User Join Date: Jul 2020 Posts: 77	Overthinking is what I do best! Been mulling what tire sizes to get for my new-to-me Cayman S II 18" wheels to swap out my 17" wheels on a 2001 Base. Just ordered these sizes: 215/45/18 245/40/18 They are .6" and .7" inches larger in diameter than my current tires. 25.7" is just inside the 3% rule. Why did I choose these over the more accepted 225/255 setup? Well, going from 17s to 18s I liked the extra sidewall height. I also like the little longer gearing for high speed cruising. With the lighter wheel/tire combo in the rear maybe the torque loss due to gearing will even out. Pics/Review to follow next week. Hopefully the rears will not hit the fender during high loads... we shall see! Last edited by Rayrevolver; 09-04-2020 at 05:16 PM.