I am finally picking up my rims today. I bought them from a friend that had a 95 Carrera C2 but I just haven't had the time to go get them.

Does anyone know if the c2's offsets are the same for the 928?

I am thinking about going with either Toyo Proxes RA-1 or Yokohama es100. Any one want to offer their 2 cents?

 

The fronts are going to be the wrong offset. The rears, you might be able to get away with, but again it's not likely to be the correct offset.

 

Shoot. I knew it was too good to be true. As you can tell I am new at the offset thing ---what do I need to do?

 

im running mille miglia C2 replicas on my 86 without issue, very nice upgrade IMO. brigestones get mixed reviews but do grip well in the wet, this is what im using out here in the rain-soaked british isles.

 

The best place that I know of to start is Here.

With that you can determine the correct offset for your car. Also do a search here for "offset".

drnick, did you buy your C2 replicas for the 928? Or did they also come off of a Carrera? I have seen it stated here time and time again that 911s, 993s, 996s, in fact all other Porsches have the wrong offset for a 928.

 

these are the 993 wheels with 48-52mm offset on the front i think. completely incorrect offset for the 928 but no issues other than they are really too small! i dont think mille miglia make another C2 wheel except the same thing in 18" form.

my wheels are 17" x 7.5 front and 9 inch rear.

 

No, they make them. 928 specialists can get them in 17", IIRC

 

So I called Tire Rack and they say no problem the C2 offsets and the 928 offsets match. Then I look at the 928 specialist web site and it looks like they will not. Apparently the offset on the rims are 47-52.

Silly me thinking this would be easy. I really like these rims.

 

I just dumped a set of Pirelli P7000s and put on the Yokahama es100s and really like them. Much quieter and responsive than the Pirellis. Wanted the Michelin sport but didnt want to shell out the big bucks. I guess they really suck in the snow and are okay in the wet but here in sunny california, I dont have to worry much about either one.

 

Where info from Tire Rack & one of the big 3 conflict, go with what the big 3 tell you. If you like the C2 rims, you can get them Here.

 

I got info from 1010tires.com they seemed to have the best info from people who have bought them and actually used them. Definately worth a look.

 

I read my earlier post on this thread and realized I was giving an answer that fits me, but there are other answers. I'm not talking about only linking to one of the big 3. I do business with all of them, and would recommend any of them.

What I mean is, there are other offsets and sizes that will physically fit without rubbing. Again, do a search on "offset".

However, the entire suspension was designed with a specific offset in mind. Changing the wheel offset alters the way loads are carried through the suspension, which can alter the handling of the car and cause premature wear on bearings and suspension components. Obviously this is far more evident on the front, but with the Weissach arm I think it is more relevant than on a typical trailing arm or live axle system.

For me, the choice is always to work with the design offset with any wheel replacement. Others have made other choices, and their satisfaction with the results has of course varied. If you want to deviate much from the admittedly strange offset dreamed up in Stuttgart for these cars(by some dang smart fellers, I might add), I urge you to do some research and find out what to expect from others who have made the same change.

So now I've come clean about fact that there are other choices. But if you want to know what my recommendation is, I recommend you stick with the original offset.

 

just so others are not confused, i am running with 993 cup two style mille miglia rims with the 993 sizing including offset. although this is technicaly 'incorrect' for the 928 it works really well! IMO an excellent choice of upgrade to the performance and look of the car.

i would be really surprised to find that the big three are supplying anything but these same rims with a 'technicaly' incorrect offset, as they work with no problems and are on numerous 928 cars allready. here in the uk wheel suppliers who deal with mille miglia vociferously deny a 928 specific wheel of any kind!

the rear wheel of the 993 set has a better offset, technicaly, and should work on the front. if you could get a set of these at 9" in diameter all around it would make sense. the wider rubber up front would help to reduce understeer.