BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)


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      09-24-2012, 06:51 AM   #1
Cozy's Avatar
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Drives: E82 135i
Join Date: Mar 2011
Location: Surrey, England

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Best Rear Tyre (Tire) Size For Tuned N54

Hi all,

First off excuse my spelling of the word, Tyre (Tire), it's how we do it over here . I've had a little search but there's no definitive answer so I'll ask...

N54 135i - Cobb Stage 1 (tune only, planned FBO)
Stock Tyres - RFT 215/40/18, 245/35/18
Suspension - Eibach Pro Kit (planned coils), 12mm spacers all round

I'm so sick of the RFT's on my car, they were 'OK' when I wasn't tuned but now the thing slides all over the place and spins up so easily as soon as I press the throttle with such a rock hard tyres, it'll do this in the dry so easily right through 3rd gear...don't get me started about wet weather performance.

I need something more grippy, I get that going to non-RFT will help things no end due to the less rigid nature of the tyre but as I plan on keeping the stock 261M wheels, will a wider 255 rear tyre be sufficient at controlling tune only and FBO power? I know that the arches limit me to space so realistically a 265 may no tfit on lowered suspension & spacers.

Obviously hand in hand with upsizing the rear is the front and 225 seems popular which is probably what I'll go with.

How do you all cope with your 225/255 setups and gettung the power down?
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      09-25-2012, 03:38 PM   #2
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Expert@ApexRaceParts's Avatar

Drives: M3
Join Date: Jun 2012
Location: Bay Area

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If you are looking for street tires with more grip, we would suggest extreme performance tires such as Hankook RS-3, Dunlop Star Specs, and Yokohoma Ad08s. Upsizing to the 225/255 sizes would be best if you are sticking with the OEM wheels. If you are looking to fit a 265/35/18 in the rear of your 1-series, we have wheels with the right width and offsets for you to do so as well!
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