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11' rear wheel. 295/30/19 tire profile, 67mm offset. is it possible?
Hey guys.
Purchased a set of carrera s ii wheels off a widebody 2009 carrera. Those who are familiar with these wheels know the front and rear offsets are 57 and 67 respectively (as far as i know). Fronts are 19x8 with brand new Pilot Super Sports and fit perfectly fine. Rears, however, are a 19x11 and will not clear cleanly- a spacer is required. My question is what size? As far as i can tell, anywhere between a 30-35mm spacer should do the trick. What are your thoughts fellas?
If you have extended studs just put some washers between wheel and hub until you get the correct offset. Measure the thickness of the washers and Voila you have your spacer thickness.
The point is not only for the spacer but also which type of suspension is installed in your car.
When I tried to install 18"/10.5" rim to my 987.2 boxster which I installed bilstein PSS9 coilover kit and lowerd to 4.5" from ground at the jack point, wheel offset must be smaller than 36mm to keep the distance between the spring and the inner rim. So the desired offset will be 28-32mm for 19"/11" rim for the same suspension setup. I guess 40-45mm thickness of spacer will be nice for PSS9.
You have to figure out how much room you have in between inner rim and spring, especially for the full length of rebound.
One thing I'm afraid is that if your car is standard or PASM suspension, you do not have enough room between spring and inner rim in order to keep the rim's are not stick out, because the diameter of original lower spring sheet is about 100mm, which is 30mm lager than that of PSS9.
A shop in Japan, which installed 20"/11" rim +30mm offset to 981, said that they needed to install height adjustable suspension and lowerd about 2" to make clearance, of course it has smaller spring sheet diameter, and all the way same as for 987.
I don't know it needs adjustable camber plate or not.
Needless to say, If you can accept to stick out the rims about 1", you don't have to care about. :-p
Hey guys.
Back with an update.
Went with H&R brand 35mm spacers- the wheel sits maybe .5 inches past the fender line, but that's the look i was going for and that i'm happy with.
SO- to other 987 owners in situations similar to mine- the answer is YES, you can fit widebody 997 wheels on a 987 with a spacer if you don't mind sticking out a bit. With a 35mm spacer i still have maybe 5mm of room between the shock and inner wheel lip, so if you really needed to, you could go closer, but otherwise the wheel must sit past the fender to clear the strut.
I think it looks awesome. Amazing the difference it makes in the overall look of the entire car, huh? I did the same with a stock 993 C2, but putting MY02 wheels on it. 1" taller and 1" wider all the way around, totally transformed the look of the car, just like yours just did here.
The big issue with 981 (base, S, GTS) and 11" wide rims is the clearance between the rim and track rod end if you want the tire it to fit inside the wheel well. caliper to rim clearance can be tight, too if you have added bigger brakes.
I am running 11x19 on MPSC2 295/30-19 using Oz Ultraleggera rims with 50mm offset and had to use a 7mm spacer, or a net of 43MM to get the rim and tire to barely fit under the fender. I probably have 5mm clearance between the link and the rim. With rubber bushings, it will eventually touch, but I am upgrading to monoball joints.
Also, on the drag strip, the 265/40-19s on 19x10 rims did better than the 295s (19x11) due to less sidewall deflection at launch even though the 295 tires are smaller in diameter and should have changed gear ratios increasing acceleration. Other drag concerns due to tire size differences are the gear ratio changes cause the car to shift into 4th (PDK) earlier, going from redline (high HP) to mid RPM (lower HP) and hurting the acceleration in the last 200' before the traps.
Finally, a large spacer may put extra pressure on the bearings and studs/bolts early failure may result. I wouldn't track the car with a 35mm spacer.
03-30-2016, 09:31 PM
11' rear wheel. 295/30/19 tire profile, 67mm offset. is it possible?
