fabio964

i wondering if in stock 964 90 using cups 2 17x 9 with 275 40 17 will be to wild for rear or will be ok ?

fabio964

the seller send me this info for rera tires wheels are oem porsche cups 2
17x9 55mm with new Falken Ziex ZE512, size 275/40Z/R17 98W M+S
will be fine for my 964 c2 without any mod ?will not be rubbering or damge oil lines ?

1990-964

They are too tall in that size. If available it would probably translate to 275-35/17. Either way let us know if it works.

race911

Got a set of Cup 1 knockoffs with 275/40's for the back of the RSA. Plenty of track miles on it. I DO use a 10mm spacer to clear the oil lines. And longer wheel studs.

And they were never a problem on the much stiffer sprung RSA #1 race car, but I had some unknown offset custom wheels for that car.

CWay27

^ +1 on what Ken said.

Christer

To be honest and IMHO, whoever told you this does not know what they are talking about. The profile is too high as others have said, and I think there are very few standard narrow bodies that can fitr a 275 with *some* issues. In addition, 275's are probably a little wide for 9 inch wide wheels...IMHO.

Gus

I run 275 /40 /17 Hoosiers on Cup 1 with a 20 mm spacer - not a problem - think Hoosiers are probably one of the widest tires you can get - So a street tire at 275 should have less width - You will need spacers regardless - but you should be OK - your offset of 55 is just a few (3 mm) more than mine

Cupcar#12

after running 275mm rears for years i downsized to 265mm's they fit better overall.
i used a 9.5 wheel with a 20mm spacer

CWay27

Are you talking 18'' cause nobody makes 265 in 17''.

kgorman

+1 on what Ken said. I run spacers to clear the oil line, I had to upgrade to the newer flattened oil line. I run RA1. But if my suspension was any softer (I run JIC/Cross), then I would get rubbing on the track. I am on the very edge of what you can squeeze under there.

Cupcar#12

CWay27 - yep i went down in isize and up in diamater. sorry that was posted in another thread