Mike_A

Just did a bunch of searches and came up empty.....has anyone (else) attempted to use 18" on their 911? Somebody in the group told me it was a real chore and perhaps could not be done. Well, in returning my 930 back to factory stock i wound up with this too good to sell set of aftermarket wheels and tires....so i tried them on my 77 RS clone.... wow-mom-wow! no rubbing at all at speed and ultra hard cornering......did i get lucky?

225/40-18 F, 275/35-18 R .....i have about 2 neg camber in the front and about 2.5 neg in the rear.....H&R coilovers.

My87Targa

post pics

Bill Verburg

Ona 911 w/ SC/Carrera flares the isssue us not 16 vs 17 vs 18 so much as it is a question of max. tire dimensions

W/ the right wheel o/s the SC/Carrera can take a max of ~10x25.7" this would be 275/40x17 or 275/35x18

A matching front would be 235/45x17 or 235/40x18

930s can take considerable wider wheelsand tires but the height still should be kept at or below ~25.7"

here is mine w/ 235/275 in 17

Gary R.

I have 18" wheels on both my SC track car (CCW's) and my 964 (Fikse).. no problems.

mw4904

Have any of you experienced a dramatic power loss when you went to 18s due to the extra weight?

Bill Verburg

The extra ~10#/wheel(Fuchs 7/9, 205/245 to Kinesis 8/9.5, 235/275) will not be felt.


But the extra ~.2 -.3" radius will have a very noticable effect on low speed acceleration. At speed, das macht nichts

Gary R.

My wheels are a LOT lighter that what was on there, especially the CCWs with Hoosiers..