Factory JCW Talk (2009+) Discussion of the factory-built 2nd Gen JCW MINI Cooper S, and all unique aspects of this trim.

POLL: What size tires are you running on your JCW?

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  #26  
Old 04-10-2011, 08:22 AM
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I find the Nitto NT01 to be a value oriented r-comp. Grip is average for an r-comp and it is really noisy and heavy feeling. However, it is really pretty good for the price and with proper tire pressure and rotation can last a fair number of track days, around 8 days.
 
  #27  
Old 04-10-2011, 09:08 AM
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Thanks for the info. I will report back after my 2 track days in a few weeks at Thunder Hill
 
  #28  
Old 04-12-2011, 05:46 AM
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Rota & JCW Brembos

Originally Posted by wahoo5
+45. They just barely clear the JCW calipers in the front.
You are running the 15 mm spacers right?
 
  #29  
Old 04-12-2011, 08:05 PM
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Originally Posted by hemisedan
You are running the 15 mm spacers right?
Yes, I am.
 
  #30  
Old 04-27-2011, 07:25 AM
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Wahoo5 would there be a better offset to run sans spacers or are you stuck with spacers at that size? Also, is there anyone who as run 245's on 8" 17's with any luck?
 
  #31  
Old 04-27-2011, 09:15 AM
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On a 2010 S coupe w/ Challenge rims...

and factory sport suspension, running Michelin PS2 225/45-17's. (Posting figuring with an MCCS and the Challenge wheels it still will have the same clearance issues)

No rubbing at all--over 4,000 miles of use now. Tightest clearances are on inside front of tires when going to full lock (but still clears inner fender lining), and up near the inner top and inside edge of shock towers in front (clears fine but wouldn't be room for tire cable chains). Rear is all fine--seems tightest near inside side of tire rather than at fenders, but all fine.

Speedo error reduced by about 1/2 ; filled out fender wells somewhat more visually too. Very satisfied.

If you go 225's, look carefully at the sidewall width. Some listed in the detailed TireRack specs are 3/10's" or so wider in the sidewall area (where it bulges the widest) than others, even if the tread width is relatively constant and it is nominally the identical tire size. The Michelins (and a variety of others) were narrower in this dimension, but some were wider. Would have one to a 215 if I really wanted a given brand but the spec. had an above average sidewall width.
 

Last edited by MP1.6T; 04-27-2011 at 09:20 AM.
  #32  
Old 04-27-2011, 10:32 AM
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Originally Posted by Maltese
Wahoo5 would there be a better offset to run sans spacers or are you stuck with spacers at that size? Also, is there anyone who as run 245's on 8" 17's with any luck?
I think you are stuck with spacers on a lowered suspension. We looked at 245s on 8" rims and couldn't find anyone doing it or to tell us it would not rub.

Here it is with the 235s. They do not rub.

http://www.flickr.com/photos/ogburn/5479131329/
 

Last edited by wahoo5; 04-27-2011 at 10:45 AM.
  #33  
Old 04-27-2011, 11:13 AM
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This winter I've been running 215 x 45 x 17" with Michelin ICE tires. No problems. I had thought about going with the 205 x 50 x 17" but Alex at Tire Rack suggested that I not do this if I was thinking about lowering the car any. I'd like to go with either that, or the 225's, but with my luck, I'd have a suspension issue at the very least. Still have to do the Summer tires this year. Everytime that I think about that, we get another cold/icy snap.
 
  #34  
Old 04-28-2011, 06:30 PM
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Originally Posted by MP1.6T
and factory sport suspension, running Michelin PS2 225/45-17's. (Posting figuring with an MCCS and the Challenge wheels it still will have the same clearance issues)

No rubbing at all--over 4,000 miles of use now. Tightest clearances are on inside front of tires when going to full lock (but still clears inner fender lining), and up near the inner top and inside edge of shock towers in front (clears fine but wouldn't be room for tire cable chains). Rear is all fine--seems tightest near inside side of tire rather than at fenders, but all fine.

Speedo error reduced by about 1/2 ; filled out fender wells somewhat more visually too. Very satisfied.

If you go 225's, look carefully at the sidewall width. Some listed in the detailed TireRack specs are 3/10's" or so wider in the sidewall area (where it bulges the widest) than others, even if the tread width is relatively constant and it is nominally the identical tire size. The Michelins (and a variety of others) were narrower in this dimension, but some were wider. Would have one to a 215 if I really wanted a given brand but the spec. had an above average sidewall width.
Just want to clarify, when you said full lock, did you kept putting weights into your MINI until all of your suspensions have fully compressed, then you measure the space between the tires with the strut and fender. Please advise! Thanks!
 
  #35  
Old 05-01-2011, 01:45 PM
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No, much more simplistic--plus practical experience since...

I simply turned steering left to full lock and then right to full lock. It doesn't touch it the inner fender liner. I don't think doing that at any real speed or really loaded would make much practical sense--you wouldn't corner hard to the point of full lock and load up the suspension like that, short of some kind of street stunt driving anyway as far as I can think of.

As far as the struts, it's not that close where I think any suspension deflection is going to make a material difference. By eye and feel, I would call it about 1/2" plus from the tire to the spring perch lower edge when looked at for verticl clearance. That dimension can't change in any meaningful way regardless of suspension deflection. As far as the inner clearance--widest part of sidewall over to the lower part of the strut below the spring perch, I would call that about 3/8"--about the thickness of a man's index finger at the nail squeezed a bit to be specific how I approximated. It is no where chose to paper thin or even 1/8" or less or some such where it might be getting close. If I used the widest 225's in the sidewall or went up toward 235's or some such I would want to check more, but I don't feel it's near the ragged edge yet at 225/45 in the MIchelin PS2's.
And, the practical field test is about 4,000 miles now on the tires, with car filled up at times (4 people) and driven on highways, aggressive on ramp cornering, city streets and bumps, etc. No rubbing and no marks indicating the same anywhere inside the fenders or on the tires.


Originally Posted by akng
Just want to clarify, when you said full lock, did you kept putting weights into your MINI until all of your suspensions have fully compressed, then you measure the space between the tires with the strut and fender. Please advise! Thanks!
 
  #36  
Old 05-22-2011, 09:17 AM
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Originally Posted by meckonica
Well here you go, I am running

Falken FK452
245-35 x 18

This size also corrected speedometer error that all minis have.

Now at 80mph indicated, actual speed is 79mph. The factory wheels and tires had an error of 6+mph at these speeds.
Are you running special offset wheels? I know when I ran 225-35-18’s on my OZ wheels, the right rear would scrub the inner liner.

I’ve since installed coilovers and switched back to 17’s (215’s) and the ride is soooo much better.


Mark
 
  #37  
Old 08-18-2011, 03:44 PM
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Im looking at winter tires & wheels .
Im leaning towards 205/50 17 continental extreme contact.
At little more side wall for the NJ pot holes.
Any reasons why I should not?
thanks doug
 
  #38  
Old 08-18-2011, 03:53 PM
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215/45/17 falken 502's just put them on an hour ago ! Stoked on the look as well as my grip to the road !
 
  #39  
Old 08-18-2011, 06:42 PM
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I had the same delema last year and went with Michelin ICE in a 215 x45 x 17. I looked at the 205/50's, but Alex talked me out of them. Not alot of upward movement clearance there. They worked great, plus the Michelin price and rebate was great too.
 
  #40  
Old 08-18-2011, 06:46 PM
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Over 10K miles (including one trip to the Tail of the Dragon) on 215-45/17 Continental Extreme Contact DW.
Car has JCW sports suspension.
I have encountered no rubbing.
Speedometer is still off: Indicated 75 mph is 72 per GPS.
 
  #41  
Old 08-20-2011, 07:03 AM
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Originally Posted by hemisedan
This winter I've been running 215 x 45 x 17" with Michelin ICE tires. No problems. I had thought about going with the 205 x 50 x 17" but Alex at Tire Rack suggested that I not do this if I was thinking about lowering the car any. I'd like to go with either that, or the 225's, but with my luck, I'd have a suspension issue at the very least. Still have to do the Summer tires this year. Everytime that I think about that, we get another cold/icy snap.
Am I understanding this correctly.
205 /50 17 will fit on a stock 2010 JCW clubman.
Only a problem if vehicle is lowered? I have no intentions of lowering.
thanks doug
 
  #42  
Old 08-30-2011, 04:11 PM
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215/45/17 it is

Alex talked me out of the 205/50/17 also, He said some have a rear tire clearance issue when carrying passengers.
 
  #43  
Old 10-28-2012, 05:49 PM
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235/40-17 toyo R888 with no issues.
 
  #44  
Old 11-07-2012, 04:52 PM
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  #45  
Old 11-07-2012, 04:53 PM
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  #46  
Old 11-07-2012, 05:11 PM
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Originally Posted by leozip
235/40-17 toyo R888 with no issues.
What wheels and offset?...I just got a set of 225/45-17 R888 to put on a set of Enkei w/38 mm offset and stock suspension. Hoping they will fit.
 
  #47  
Old 11-07-2012, 05:32 PM
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Originally Posted by Eddie07S
What wheels and offset?...I just got a set of 225/45-17 R888 to put on a set of Enkei w/38 mm offset and stock suspension. Hoping they will fit.
Veggi has a similar setup on his r53 with the 225 rcomp tires with non lowered suspension and they fit his car. I think you should be good to go.
 
  #48  
Old 11-07-2012, 05:36 PM
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Originally Posted by Eddie07S

What wheels and offset?...I just got a set of 225/45-17 R888 to put on a set of Enkei w/38 mm offset and stock suspension. Hoping they will fit.
Stock challenge wheels with 5mm spacers and no rubbing. You should be fine.
 
  #49  
Old 11-08-2012, 04:00 AM
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Thanks
 
  #50  
Old 11-15-2012, 06:09 PM
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215/45-R17 Michelin Pilot Super Sports. They're great - have 'em on my old M3 too (different size).

I'm now fiddling around with tire pressure.
 


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