D Stock 16" vs. 17" verdict?
#51
Aaargh... too many choices!
I've been researching for a while & still can't decide.
I'm running a 2008 MCS Convertible (R52) in G stock. BMW hasn't updated the topless models, so it's basically a R53 with a little extra weight.
That being said, since I have a little less torque than the R56s, I'm leaning towards 16" x 6.5" Roto Slipstream wheels with 215/40/16 V710's.
Wow, now that I've typed that, I feel much better. Almost like I've committed. I'm going to run the season that way & see what happens. If I see a deal on 2 used 17" tires, I can always throw them on my OEM rims (web spokes; light for a RFT rim) and try running 1 day with them on the front for comparison. Of course the weight will be greater than racing wheels, but anything we attempt will always end up being an apples to **** comparison anyway.
Any thoughts/comments/questions/criticisms?
I'm running a 2008 MCS Convertible (R52) in G stock. BMW hasn't updated the topless models, so it's basically a R53 with a little extra weight.
That being said, since I have a little less torque than the R56s, I'm leaning towards 16" x 6.5" Roto Slipstream wheels with 215/40/16 V710's.
Wow, now that I've typed that, I feel much better. Almost like I've committed. I'm going to run the season that way & see what happens. If I see a deal on 2 used 17" tires, I can always throw them on my OEM rims (web spokes; light for a RFT rim) and try running 1 day with them on the front for comparison. Of course the weight will be greater than racing wheels, but anything we attempt will always end up being an apples to **** comparison anyway.
Any thoughts/comments/questions/criticisms?
#53
Keith, I am curious why you think that the 16"s last longer. I found brutal tire wear, and a lot of that was from wheel spin. When I went to the larger tire, I decreased the wheel spin on the way out of a corner.
#55
#56
Fair enough. But this is more of a function of a tire model's availability compared to wear in a rim size, correct?I thought I saw that Kumho was coming out with a 215/40R17, to compete against Hoosier's 225/40R17.My issue with the 215/40R16 and the 205/45R16 is their height. They are both about an inch and change shorter than stock.
#57
#59
I still have a lot to learn about how to drive a FWD car, but so far I am pleasantly surprised at the R56's willingness (eagerness?) to rotate.
#60
Finally got a chance to run the tires at the event yesterday. They fit fine, no rubbing (not that I expected any given the advice of everyone on the board). Gearing with the 215 16s is definitely an issue; the car was way up in the rev range through much of the course, and I might have benefitted from a shift to third in a couple of places. Other than that, though, I was pleased with the 710s overall.
I still have a lot to learn about how to drive a FWD car, but so far I am pleasantly surprised at the R56's willingness (eagerness?) to rotate.
I still have a lot to learn about how to drive a FWD car, but so far I am pleasantly surprised at the R56's willingness (eagerness?) to rotate.
One problem was major understeer - something I had dialed out when on street tires. With only 4 runs, I didn't get a chance to play with the pressures much though. Started 36 front 38 rear (cold), but the fronts were too soft and wearing past the shoulder. Quickly threw another 2psi in the fronts and that's where it stayed for the last 3 runs. I think I need to put at least another 2 pounds in the rear tires to get some rotation.
The other thing was I was breaking too early (not used to the extra stopping power of the V170) so I was entering some corners a lot slower than I needed too. It's like learning to drive all over again with these things - hopefully I'll get a better feel for them after the next event.
How did you like your setup, what pressures did you use?
#61
d
#62
Thanks. Rubbing on the strut body, so you are talking only in front? What was the wheel offest? I think stock has 48mm offset... I wonder how low we can go (maybe 42mm?) to avoid rubbing on strut body, but also on the fender.
#65
#66
Thats a new size, I would recommend trying it out on an R56. I will for sure if I don't sell my Mini.
#67
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