MichaelK

I assume there an offset for a 9" wheel that will fit on an NA 944.

I know my wheels are the wrong offset and I am resigned to using spacers and possibly new studs to get the wheel to fit. I realize that when enlarging the size of the rear wheel I will lose an inch of clearance total due to the larger wheel. Should I balance that out to be the same on the inside and outside of the wheel or is it better to go one way or the other, ie lose more clearance on the outside of the wheel?

I can do the math, I am just trying to figure out what the right answer should be at the end.

ritzblitz

et0 ish with steel trailing arms and no spacers.

MichaelK

Steel is the early ones right?

so if my wheel is ET50 I need 50 MM in spacers?

ritzblitz

Yes steel arms are early.

50mm spacer will bring it pretty flush to the fender. But everyone's fenders are a little different in relation to the chassis so you may want to make your own measurements. I just said et0 ish because a 16x10 et-2 fits on my rear. But that is with a 225 tire, so you have to factor all that stuff in

racer

For an '84 with early offset wheels? well, the Porsche 9x16 Fuch from the 930 fits. and iirc, it has an offset of 15

An ET50 sounds like a late offset wheel (my 9x17 knockoffs are ET47). So yes, math will be required. imho, running an approx 2" spacer isn't quite the right way to go, especially if you are then going to put 300+hp through it

Ride height, alignment settings and tire size will all impact fitment.

A 245-45-16 will fit.. I have a 255-40-17 that fits fine.. and I have seen as large as 275s stuffed in back.

mattipuh

ET55 on late stock 17'' wheel. 9'' wide.

MichaelK

I did the math and ET 0 puts basically all of the extra width of the wheel on the fender side with only 3 MM less clearance on the inside. I kind of expected it to be a bit more evenly distributed between the inside clearance and the fenders.

Given that the original studs are only 65 mm and there is a 21 mm spacer on there from the factory already I guess I am going to need some longer studs to make this work. Would it be best to get rid of the factory spacer and just get a single 60-70 mm spacer to make this work?

pettybird

Are you looking for wheels? I have cup I replicas for an early offset 944, 17x7.5 front and 17x9 rear. nice shape with minor scratches, $300

MichaelK

Thanks you for the offer. I think at this time I am just going to look ridiculous with my boxer 17's on the front and my 15" cookie cutters on the back until the budget allows for new studs and spacers.

I figured wheel studs would be a few dollars each but the best I can come up with is $16 each.

ritzblitz

What do you need wheel studs for... ?

MichaelK

I need longer studs to acomodate the large spacer because I bought wheels that are simply the wrong offset.

The stock studs are 65 mm according to the parts diagram I have. If I add 50 mm in spacers (bringing the wheel down to 9" ET5) to the rear of the car I won't have any threads sticking out to put the lug nuts on.

ritzblitz

Dude they better be some special wheels because that big of a spacer is like a boat anchor attached to your suspension. FYI if you go this route you do not need bigger studs, you can get bolt on spacers that come with studs.

MichaelK

I hadn't considered that. I just assumed you could make any wheel fit with the right combo of spacers and offsets. I kind of rushed into buying these wheels because I wanted the brake upgrade done. I think I will roll around on the OEM's for the rear for the winter and then figure out a better solution in the spring.

CorsePerVita

Why not go hubcentric instead of just bigger studs?

racer

here: http://www.hrsprings.com/products/trak/