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Related Categories: Lightweight Rims | Autocross Wheels | Kosei K1 | Enkei Rpf1 Weight | Lightweight Wheel | Forged Wheels | Kosei K1-ts | Kosei K1 Wheels | Kosei K1 Racing | Kosei K1 15x7
  • Kosei K1 Racing Versus New Kosei K5R

  • Are you looking for a strong, lightweight wheel for autocross events? In the past, you would look no further than the Kosei K1 Racing wheel. Designed for track use, the Kosei K1 Racing meets many of the demands of the weekend warrior racer. Whether you are a driver participating in HPDE track days,…

  • Related Products: Kosei K1 17x9 | Miata | Kosei K5r
  • Why two valve stems on Kosei K1 wheel?

  • Our Kosei K1 TS has two valve stems and many customers ask why. They are located 180 degrees from each other. In racing, many teams use nitrogen. Nitrogen has larger molecules than ambient air and is less likely to "seep" through the pores in all tires. It also is less sensitive to…

  • Related Products: Nitrogen | Kosei K1-ts | Kosei K1 Racing
  • BMW Lightweight Wheels

  • You have decided to take the BMW to the track and you don't want to use its original wheels and tires. The Kosei K1 Racing is a proven wheel that is used by autocrossers and track guys every weekend. They are lightweight in a 17x8.5 wheel and 16.8 lbs. currently priced at $175.00 per wheel.…

  • Related Products: 17x8.5 | Kosei K1 | Lightweight Rims
  • Grand-Am Racing and Kosei Racing Wheels

  • I recently attended the Grand-Am races at the Mid-Ohio Sports Car Course. In the Continental Tire Sports Car Challenge, many of the cars were running a very light, strong street wheel, the Kosei K1 Racing wheel. These wheels have been used for years by club racers driving Mazdas to BMWs. A number of…

  • Related Products: Kosei K1 Wheels | Kosei K1
  • Looking for Lightweight Wheels?

  • Looking for lightweight wheels? Tire Rack can help shed the pounds! Shop by vehicle. Then you can filter search results by brand, diameter, finish and weight. Enkei Racing Series RPF1 (Black Painted) on 2009 Subaru Imperza WRX - 17x7.5 15.2 lbs. Kosei K1 TS (Silver Painted) on 2006 Mazda MX-5 Miata…

  • New Kosei K8R Lightweight Wheels

  • The beginning of spring racing season will be here before you know it! If your wheels are in poor shape, or you're just looking for lighter replacement wheels, be sure to check out the offerings from Kosei. In years past, their popular K1 Racing design has been extremely popular due to its…

  • Lightweight, Track-Proven Wheels

  • So you’ll be doing some autocrossing or track days and you’re looking for some lightweight wheels for your BMW 3 Series or Mazda. Take a look at the Kosei K1 Racing or the Enkei RPF1. Both of these wheels will reduce unsprung weight and make your car stop faster and accelerate quicker.…

  • Related Products: Track Day | Kosei K1 | Enkei Rpf1 Weight
  • Tires & Wheels for BMW Club Racing

  • For club racers, I have found the TRMotorsport C2 and the Kosei K1 Racing wheels work really well on the E36 M3 cars. They are both very light -- the C2 at 19 lbs. and the K1 at 16.8 lbs. Reducing unsprung weight and getting to the same size wheel and tire on all four corners is a good thing for…

  • Related Products: E36 | Kosei K1 | E36 M3

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