EMan 928

I just purchased a set of Replica Cup I wheels and tires with the following specs:

Front: 7.5 x 17, ET52, 235/45ZR17

Rear: 9 x 17, ET47, 275/40ZR17

Is this a good setup on the 928?

Will i have any changes in the speedo readout?

With these offsets, will I be tram lining all over the place?

Thanks, Eric

davek9

Read this, it was posted in another thread and it's great

http://api.viglink.com/api/click?for...13325243092761

EMan 928

Thanks, Dave. Based on what the article says, the ET52 up front is really undesirable. In doing a search, I see a lot of you guys using the 52 front offset. Do you need to adjust the camber to handle the 235 size tire?

86'928S MeteorGrey

What are you going to do with those nice, correct offset twists?


Oh... nevermind... Thought your "Oakland" was in California....

EMan 928

right now they are staying on that car. The Cup I's i'm talking about are for my 87.

Vilhuer

How this ET and wheel size thing can be so difficult to so many?

Oli928

Don't know if you solved everything, but just wanted to chime in with my experience.

I just scored on some Cup-1 wheels. ET52 7.5"-17 & ET47 9"-17

Tires I got were 225/45-17 ZR and 255/40-17 ZR. No problem fitting. Better ride than w/stock 16" 7 & 8" wheels. I'm sure you noticed TireRack.com has this exact size wheels and recommended tire size.
Cornering is fine. Didn't have to do anything special during install.

Also, I got good info while at tire store...this place has 800 locations, so I trust the info on the computer screen: (let me know if you need name of store, in case you need more MY details)

(This was for MY89, but I'm sure it will fit any applicable 928 with similar specs)

Recommended sizes:

7" ET46/55 / 205/225
7.5" ET48-52 / 205/225
8.5" ET47/49 / 225
9" ET47/55 / 245/255
9.5" ET52/56 / 255/265/275
10" ET45/50 / 265/275/285

EMan 928

Thanks, Oli. I appreciate the feedback!

Oli928

I didn't want to post pictures until my car was clean, but someone asked me to...from a different thread.

Below is a link to pictures:


https://rennlist.com/forums/928-foru...ml#post9531491