TireRack and OZ Racing introduce the Challenge Race Wheel.
04-27-2012, 03:12 PM
#46
Former Vendor
Thread Starter
If your car has the standard sized rotor, steel or ceramic, they will fit. If you have the larger PCCB rotor, they will not. Sorry for the confusion.
04-27-2012, 04:20 PM
#48
Rennlist Member
I'll bring them to Sebring next week and test fit on both steel and ceramics and report back.
04-28-2012, 09:21 AM
#50
Race Director
04-28-2012, 04:31 PM
#52
Damon probably is going by some memory of the 350mm vs 380mm steel vs ceramic .mk1 setup.
Damon,
If you read this, it is pretty easy, but I will say it again.
For the 2010/11 mk2 cars, the Iron rotors are 380mm - just like the Ceramics. And, the calipers are the same but painted a different color. So, these 18s, if you say they Fit / Clear the Iron setup - they MUST also clear the Ceramics.
The only way I am wrong on this is if the offset of the ceramic is different. Now this is true I believe by a tiny, tiny bit. I know this because it has been documented here that an mk1 car with ceramic rotors was able to use an mk2 car's Iron rotors but I believe the used a tiny washer to shim the caliper, I believe 'outward' by the tiniest bit to line up the rotor in the center of the caliper.
I could be wrong, but I'm pretty sure that means that Iron rotor cars have the caliper very very slightly further outwards. If this is the case, then if they work on the Irons, they should clear the Ceramics by the tiniest bit more.
I may have this backwards but I think the logic is correct.
I would suggest that Damon ship one wheel to the closest rennlist person with Ceramics and they test it out - if it clears, I'm sure lots of people would be interested. And if they could come with 5lugs, you could sell even more to the mk1 crowd.
Damon,
If you read this, it is pretty easy, but I will say it again.
For the 2010/11 mk2 cars, the Iron rotors are 380mm - just like the Ceramics. And, the calipers are the same but painted a different color. So, these 18s, if you say they Fit / Clear the Iron setup - they MUST also clear the Ceramics.
The only way I am wrong on this is if the offset of the ceramic is different. Now this is true I believe by a tiny, tiny bit. I know this because it has been documented here that an mk1 car with ceramic rotors was able to use an mk2 car's Iron rotors but I believe the used a tiny washer to shim the caliper, I believe 'outward' by the tiniest bit to line up the rotor in the center of the caliper.
I could be wrong, but I'm pretty sure that means that Iron rotor cars have the caliper very very slightly further outwards. If this is the case, then if they work on the Irons, they should clear the Ceramics by the tiniest bit more.
I may have this backwards but I think the logic is correct.
I would suggest that Damon ship one wheel to the closest rennlist person with Ceramics and they test it out - if it clears, I'm sure lots of people would be interested. And if they could come with 5lugs, you could sell even more to the mk1 crowd.
04-28-2012, 05:59 PM
#53
Addict
Rennlist Member
Rennlist Member
If these wheels will clear the brakes on the 2010-2011 997.2 GT3 with steel brakes , they will work on the PCCB as well.
The first generation 997 GT3, came with different dimensions for steel brakes and PCCB, but these cars don't even use Center Locks, they use 5 lugs.
The offset for the 18x11 ans 18x12 only work on the wide body cars, the narrow body cars cannot use these offsets, as the 305 tires will rub the rear fenders.
The wheels are a perfect choice for 997.2 GT3 RS, Carrera GTS, 997 GT2 RS. (18x9 and 18x12 CL). I don't see a CL application for the narrow body 997s based on the offset information posted. One more reason not to get a 997.2 GT3 and get a 997.2 GT3 RS instead.
04-30-2012, 11:49 AM
#55
Former Vendor
Thread Starter
Ok guys, here's the deal on the brake clearance.
I had my lead engineer is back in the office this week and I had him pull the drawing of the wheel and compare it against the brake diagram. The 380 mm rotors and calipers do clear the wheel. The big vs. small misunderstanding was mine. I was under the impression there was still two different diameter rotors, not just the 380mm. Egg on my face, sorry about that.
The Challenge wheel does clear the 380mm brakes. One thing we did find is that it's going be tight. Weight placement will have to be done carefully.
Again, sorry for the confusion. Let's get this back on track.
Soooo, who wants to be first?
I had my lead engineer is back in the office this week and I had him pull the drawing of the wheel and compare it against the brake diagram. The 380 mm rotors and calipers do clear the wheel. The big vs. small misunderstanding was mine. I was under the impression there was still two different diameter rotors, not just the 380mm. Egg on my face, sorry about that.
The Challenge wheel does clear the 380mm brakes. One thing we did find is that it's going be tight. Weight placement will have to be done carefully.
Again, sorry for the confusion. Let's get this back on track.
Soooo, who wants to be first?
04-30-2012, 12:09 PM
#56
Race Director
Damon...thanks for looking into this...this why you are well respected.
I'd love to be 1st and get a GT3RS spec set of these wheels....but I have to sell my OZ 19" I got from you 1st.
I'd love to be 1st and get a GT3RS spec set of these wheels....but I have to sell my OZ 19" I got from you 1st.
04-30-2012, 01:04 PM
#57
Former Vendor
Thread Starter
04-30-2012, 03:36 PM
#59
Race Director
04-30-2012, 04:24 PM
#60
Former Vendor
Thread Starter