Why do both these wheels have such a high offset in the rear? With that weeny little caliper in the rear, they should be able to do a ~20mm and get some nice concavity.
From what I've read, ~40mm seems to be the sweet spot for the rear wheels. I'm afraid a ~20mm offset would set the wheel too far out, potentially causing rubbing issues. I think a ~20mm offset is a bit more doable in the front, but I still think they'd stick out too far. People have expressed a lot of concern over RTR's 33mm offset. They seem right on the verge of sticking out too far, but I don't think anyone's had any issues.Why do both these wheels have such a high offset in the rear? With that weeny little caliper in the rear, they should be able to do a ~20mm and get some nice concavity.
I agree that comparing the Michelin Super Sports (some of the best tires on the market) against the Nittos is not a fair comparison (and not my intention). My reasoning behind this is that I have to piecemeal the TSW package (vs. the RTR package), so I chose better tires. The TSWs also allow me to have a greater stagger, so I took advantage of that by creating a bit more complicated setup with the 255s up front and the 285s in the rear. However, the RTRs run 275s all around, can be rotated, and will have no rake, so there are a minor advantages there...Michelin's are a lot more more money than Nittos not a far comparison. I like the TSW better they are lighter and have better color, offsets and size.
Craig - very much appreciate your comments. You're the first person to address my questions regarding the offset selection and Brembo clearance.When I was buying wheels for my old f-body I based all my numbers off of the Factory WS6 wheel. So you need to know the Brembo wheels factory offset (which I believe is 40mm). IMO all your specs look good except the fronts with the 32mm offset. But since the wheels are 9" wide and not 9.5's like the RTR's you may be ok. Another thing to think about when pushing the wheels outward with smaller offsets, is wheelwell clearance when the wheel is at full jounce. And as far as BBP clearance I'm almost positive any 19 or 20" wheel should be fine.:bigthumbsup
Man, Alex, that's a sick looking car - love it. I'd love to run a similar setup on my car, but the available wheel options for the Nurburgrings do not come in such sizes with the correct bolt patterns. For better or worse, I think I'm stuck with the sizes stated in my original post.I run a TSW 20x9.5 with 45mm of offset in the front and 20x10.5 with 63mm of offset in the rear. I added a 3mm shim to the rear I think it looks better still far from sticking out. Oh Nitto tires. Mine are Interlagos and they come in the same offsets as the Nurburgring both are forged rim wheels. Weigh 23.5 lbs front and 24.5 lbs rear.
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Great calculator - thanksFor comparison stock Brembo wheels are 19x9 +42mm.
The TSW option would stick out 10mm in front and 17mm in the rear. The RTR option would stick out 15mm.
Wheel Offset Calculator
I run a TSW 20x9.5 with 45mm of offset in the front and 20x10.5 with 63mm of offset in the rear. I added a 3mm shim to the rear I think it looks better still far from sticking out. Oh Nitto tires. Mine are Interlagos and they come in the same offsets as the Nurburgring both are forged rim wheels. Weigh 23.5 lbs front and 24.5 lbs rear.
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Your assumption is right on the money as that is what I was trying to convey to you. BTW my choice would be the TSW's. Also it's my understanding that the Brembo's need a 19" or bigger wheel, but I also read somewhere that there are a few 18" styles that will work. Hopefully my limited knowledge was able to help in your descision.Craig - very much appreciate your comments. You're the first person to address my questions regarding the offset selection and Brembo clearance.
The RTRs have a 33mm offset with a 19"x9.5" rim running 275/35ZR19s on several mustangs. From what I've seen, nobody has run into any wheel-well clearance issues (although close!). Considering that the TSWs have 32mm offsets on 19"x9" rims with a 255/35ZR19, I feel like I'd have plenty of rim to spare (please correct me if that's an incorrect assumption). Something I'd been curious about is if clearing the Brembo brakes is a rim height or rim width issue. Judging from your post, it looks like it's a height issue - so even a 20"x8.5" rim (which actually has 40mm offsets) will clear them.
You definitely helped the process - much appreciated. This thread really solidified my decision on the TSWs and Michelins. Now my Pirellis need to wear out already so I can make the order, but I'm surely not burning out $400+ tires!!Your assumption is right on the money as that is what I was trying to convey to you. BTW my choice would be the TSW's. Also it's my understanding that the Brembo's need a 19" or bigger wheel, but I also read somewhere that there are a few 18" styles that will work. Hopefully my limited knowledge was able to help in your descision.
Good Luck
Very nice setup! I noticed that you don't have Brembos, but was wondering - how does the clearance look using 20"x8.5"s up front? Do you think I could get away with running them on my car?I am running 20 x 10 and 20 x 8.5 40mm offset 285/30/20 and 255/35/20 in the front Nitto Invo's. I ran my rear tires off already so I am putting on a 315/35/20 Nitto NT05 R in the rear.