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E82 / E88 1 Series (2008 - 2013)
BMWs throw back to the iconic 2002, with a renewed form and function. The smallest car in BMW's line up but still packs a punch. Available in coupe or convertible, powered by either an inline 6 in the 128 or the twin turbo rocket sled 135.

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  #1  
Old 01-25-2014, 08:53 PM
mecheng1 mecheng1 is offline
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Suggestions for Track day tires

After running hard all day at Roebling Road Raceway yesterday, my front RFTs have chunked pretty badly on the outside shoulders. Any suggestions on suitable replacement tires which would hold up better than the OEM run flats.? I am not ready to get a set of racing tires/wheels yet, but would like to know if there is a better tire set up to go to. Thanks.
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  #2  
Old 01-27-2014, 06:37 AM
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First, it's normal for tires to get beat up at a track day, so don't give up on your tires.

I'd probably use them up then buy a new set rather than throw them away.

As for track tires, I wouldn't go to R compounds, just get a good summer tire like Michelin Pilots, Bridgestone SO3 (SO4?) etc. R compounds will have more grip but will let go suddenly, you don't learn as much as with a tire that gives up more progressively.
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Old 01-27-2014, 06:55 AM
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Brake_L8 Brake_L8 is online now
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If you want a good street/autocross/track tire - keeping in mind it will be grippy only in the warmer (above ~45) months - take a look at Dunlop Direzza ZII's. They're the new Dunlop Star Spec and they are a good all-rounder summer tire.
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Old 01-27-2014, 07:30 AM
mecheng1 mecheng1 is offline
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Good information. The problem is that the rear RFTs are in new condition while the fronts will be finished with another track day. I don't want to replace the fronts with RFTs, I want to eventually move away from RFTs altogether. So short of throwing out or selling both new rear tires and getting a full set of Dunlops or Michelins I haven't come up with a solution yet. Also I want to research if I can go up a size on the new tires without running into any body intereference issues. So I am also looking for the best tire that will tolerate occasional track day beatings down here in Florida/Georgia.
All while trying to explain to my wife why "her" car needs new tires so soon.
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Old 01-27-2014, 07:41 AM
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Originally Posted by mecheng1 View Post
Good information. The problem is that the rear RFTs are in new condition while the fronts will be finished with another track day. I don't want to replace the fronts with RFTs, I want to eventually move away from RFTs altogether. So short of throwing out or selling both new rear tires and getting a full set of Dunlops or Michelins I haven't come up with a solution yet. Also I want to research if I can go up a size on the new tires without running into any body intereference issues. So I am also looking for the best tire that will tolerate occasional track day beatings down here in Florida/Georgia.
All while trying to explain to my wife why "her" car needs new tires so soon.
Rotate them, you'll have a blast on the track with 255 fronts and 225 rears.

This is why BMW's 225 front, 255 rear setup sucks. Can't rotate them, and the fronts are too narrow. Go 235s front and back, probably solved.
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Old 01-27-2014, 08:59 AM
mecheng1 mecheng1 is offline
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I think that you are right. Best solution would be to get Bridgestone Potenza S-04 or Dunlop Direzza Z11 in 235/40R18 all round. Thanks
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Old 01-27-2014, 09:00 AM
mecheng1 mecheng1 is offline
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I just wonder why BMW went the 215 front/245 rear in the first place? Handling balance?
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Old 01-27-2014, 09:45 AM
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I just wonder why BMW went the 215 front/245 rear in the first place? Handling balance?
That's not balanced, they wanted safe understeer. The 1 series with it's short wheelbase and powerful engine is more tricky to drive than a 3 series.
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Old 01-27-2014, 12:22 PM
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Originally Posted by mecheng1 View Post
Also I want to research if I can go up a size on the new tires without running into any body intereference issues.
My 128 has 17" wheels, and I think the "safe" tire width is a 235 if you want a square setup. I have some 245-width rears stuffed on it now (winter all-seasons, they were free, and they fit) but I have 225's up front and not sure how much wider I could really go.
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Old 01-27-2014, 01:17 PM
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Originally Posted by Brake_L8 View Post
My 128 has 17" wheels, and I think the "safe" tire width is a 235 if you want a square setup. I have some 245-width rears stuffed on it now (winter all-seasons, they were free, and they fit) but I have 225's up front and not sure how much wider I could really go.
225s are perfect for a 128i. I have that square setup on my ZHP, which has a bit more power than a 128i. It's very neutral and has plenty of grip under power, but not too much.
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