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  1. #1
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    What size drag radials?

    I'm contemplating picking up a set of drag radials. For those of you with experience, what size are you running and how we're your results?

    Im thinking 275/40/17 but also wouldn't mind trying a 245.

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    Sidewall is really the most important part of a drag tire. Even more important than the couple of mm you add to the tread width. I've been researching for a while and even tried to sell my current wheels so I could get smaller lighter wheels. A lot of muscle cars run 15" wheels so they can fit taller tires. They then reduce tire pressure to give the sidewall more flex thus getting more grip. We're pretty limited to the sidewall size on these cars. I'm buying 275/30/19 nitto 555r for the rear. If I had my choice I would run a 18x9 rear with a 265/40/18 on the rear. That will fit if I remember my conversation with tire rack correctly.
    2011 335is DCT, moving to Italy, looking for new car friends Click here to enlarge

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    Definately agree, that's why I'm thinking 17s to get the most sidewall possible. Shorter stiffer sidewalls tend to cause severe wheel hop.

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    I have the 275/40/17 BFG and they barely fit on a 335. They are honestly overkill with an Auto. I have NO hop at all, but i don't get any with the stock run-flat 19's either.

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    I was thinking about putting slicks on my stock 17s but I really don't want to change wheels for the strip. I go to the local 1/8 every other fri night. That's a lot of wheel changing and begging for scratches on my 19s.
    2011 335is DCT, moving to Italy, looking for new car friends Click here to enlarge

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    you will want 17's for a dedicated drag radial. @Laloosh thinks thats even too big and we should go to 15's or 16's. IIRC, @ChuckD05 bought my old set. i dont remember the size

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    Lulz- I have this rear m3 rim and BFG drag radial setup from my m3 I might sell.. 275-35-18
    pm me if you have interest, I also have the eisamnann Race exhaust and rear diffuser Click here to enlarge

    Click here to enlarge

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    What's the offset? I had e46 m3 wheels at first and the rears rubbed on 265/40/18 et22.
    2011 335is DCT, moving to Italy, looking for new car friends Click here to enlarge

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    They are e46 m3 wheels... I had no rubbing issues at all on my m3

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    Moved to wheels/tires.

    Pay more attention to sidewall rather than width. Go 17 or even 16 if you can.
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    Click here to enlarge Originally Posted by boosted-M Click here to enlarge
    They are e46 m3 wheels... I had no rubbing issues at all on my m3
    Same, I ran and still run E46 M3 18's.
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    Click here to enlarge Originally Posted by bigdnno98 Click here to enlarge
    Sidewall is really the most important part of a drag tire. Even more important than the couple of mm you add to the tread width. I've been researching for a while and even tried to sell my current wheels so I could get smaller lighter wheels. A lot of muscle cars run 15" wheels so they can fit taller tires. They then reduce tire pressure to give the sidewall more flex thus getting more grip. We're pretty limited to the sidewall size on these cars. I'm buying 275/30/19 nitto 555r for the rear. If I had my choice I would run a 18x9 rear with a 265/40/18 on the rear. That will fit if I remember my conversation with tire rack correctly.
    Yup, my buddy picked up more time by switching from a 17" to a 16" radial than he did from his catless downpipes on another platform haha. If we could get 16's onto the rear (ideally 15's) it would be AWESOME!!

    PS: 19" 555r's?? or did you mean 555.

    Click here to enlarge Originally Posted by lulz_m3 Click here to enlarge
    Definately agree, that's why I'm thinking 17s to get the most sidewall possible. Shorter stiffer sidewalls tend to cause severe wheel hop.
    275/40/17 and 245/45/17 seem to be the easiest to make work for us. The 245's sidewall is a bit taller by a tinnnnnnnnnnnnnnnnnnnnny bit, but it's negligible. I do have the itch to make a 315/35/17 555r happen though, I think a pre-lci e90 MIGHT be able to pull it off with a bit of work.

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    What's the smallest wheel diameter that will clear 335 rear brakes? My fiancÚs E90 has the non sport 16s, I may have to jack one and see if it clears.

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    Click here to enlarge Originally Posted by lulz_m3 Click here to enlarge
    My fiancÚs E90 has the non sport 16s, I may have to jack one and see if it clears.
    Please do an post a thread on it.
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    I put lost marines 17# k1s on my 135i

    I believe they had 275s?? on them. 17x8+40 I want to say

    Hooked great.

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    Click here to enlarge Originally Posted by lulz_m3 Click here to enlarge
    What's the smallest wheel diameter that will clear 335 rear brakes? My fiancÚs E90 has the non sport 16s, I may have to jack one and see if it clears.
    17's are the smallest I've had fit. If you could get a 16 onto the rear only that would open a whole new world of options.

    One of the guys with a 135i had a set of custom made 16" wheels fit

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    I run 285/35/18 Nitto 555R drag radials on Sportline CS.16 lightweight wheels. You can stay with these on all the season and not have to change them for the track. Perfect for daily driving, no rubbing and good grip also sufficient in the rain. Go to the track -> deflate tires -> play -> inflate tires, go home. 1.900 60ft can be easily done on a manual transmission.

  18. #18
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    Please do an post a thread on it.
    Will do.

  19. #19
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    I have 275.30.19 Michelin pilot SS on the rear with a 19x10 +37 right now, so i have no concerns about width. Im just curious what setup has yielded the best results. The problem with really wide tires are they increase rolling resistance. Im more curious if anyone has had good success with a 245.45.17 tire?

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    Click here to enlarge Originally Posted by Dr. G Click here to enlarge
    17's are the smallest I've had fit. If you could get a 16 onto the rear only that would open a whole new world of options.

    One of the guys with a 135i had a set of custom made 16" wheels fit
    335i Rear brakes are 13.2"
    135i Rear brakes are 12.8"

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    the most common setup i've seen used seems to be the Kosei K-1 17x8.5 40mm offset with a 275/40-17 drag radial (Hoosier, BFG, etc). that's what i plan on going with shortly...

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    I could be wrong but many have used 245/45/17 before. I used nt555r in that size but they were used from previous owner down to the last little bit of rubber left. Three passes on them before they were stolen :-( from my storage unit.

    But I got a 1.92 with a 6m with those.

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    Than i went with 275/40/17 nt05r on z4 wheela

    LMs koseis I bought rubbed with 275s an that was before I rolled my fenders on my 135 so I sold them a e92 guy who DD them with no issues

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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by ChuckD05 Click here to enlarge
    Than i went with 275/40/17 nt05r on z4 wheela

    LMs koseis I bought rubbed with 275s an that was before I rolled my fenders on my 135 so I sold them a e92 guy who DD them with no issues
    cool...thanks for the info ChuckD

  25. #25
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    Yeah that's why I never bothered tinkering and trying the 16's since I would have to spend the cash to buy them and then cash to burn them when they didnt fit haha.

    The 135i fitment was VERY tight even with the smaller disc size, but I beleive our caliper also is slightly less tall so that might offset things a bit, but regardless I don't see it happening.

    Mickey Thompson's in 17" seem to provide plenty grip for our power levels though.

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