EcoBrick Bob
03-05-2009, 06:54 PM
THIS INFORMATION COMES FROM MY 1-13-09 Thread - "285's"........
The stock 19" wheels and tires weigh 54 lbs. My scale showed both wheel and tire weighed 27 lbs, though Bridgestone says 28 lbs on tire. Stock wheels are Enkei and are made in Thailand.
The 19 x 8.5 Beyern Multi's w/ tire ALSO weighed 54 lbs! Beyerns are TSW and are made in China.
The rear 19 x 9.5" Beyern w/tire weighed 58 lbs. Bridgestone shows the 285's weigh 31 lbs, so the wheels would be 28 lbs, or 1-2 lbs more than the fronts.
FOR COMPARISON: My Shuk WR-1 GTO wheels weigh considerably less!
17 x 8 w/ 245-45-17 Bridgestone 750's are 44lbs. They are 9.6" wide with a tread of 9.0" and turn 811 rev. per mile. This is 4 % smaller than the G8 19" front. If you used this tire on the G8, it would be about 3 mph optimistic at 60. The stock tires are almost exact GPS vs. Digital Speedo.
17 x 9 w/275-40-17 Bridgestone 750's are 46 lbs. They are 10.9" wide with a tread of 10.0" and turn 811.
If you are trying to save weight when racing, you would be savings 44 lbs by using these light weight wheels and 17" tires. Both custom sets of wheels have a hub diameter from a BMW = 72MM.
TPMS re-calibration was a snap!!!! worked correctly the first time, even with 2 inflated stock TPMS wheels in trunk..... (wondered why rears showed they were working on way home!)
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FYI - I currently have Shuk wheels on my 09' G8. Speedo is only off by about 4%. This wheel and tire combo make the car much more responsive. Steering is noticeably different. Ride suffers... must be tire compound???
Have set of 19" staggered Breyton Race CS on order for 09'. Will weigh and post pix upon arrival. Shuks going back on GTO.
The stock 19" wheels and tires weigh 54 lbs. My scale showed both wheel and tire weighed 27 lbs, though Bridgestone says 28 lbs on tire. Stock wheels are Enkei and are made in Thailand.
The 19 x 8.5 Beyern Multi's w/ tire ALSO weighed 54 lbs! Beyerns are TSW and are made in China.
The rear 19 x 9.5" Beyern w/tire weighed 58 lbs. Bridgestone shows the 285's weigh 31 lbs, so the wheels would be 28 lbs, or 1-2 lbs more than the fronts.
FOR COMPARISON: My Shuk WR-1 GTO wheels weigh considerably less!
17 x 8 w/ 245-45-17 Bridgestone 750's are 44lbs. They are 9.6" wide with a tread of 9.0" and turn 811 rev. per mile. This is 4 % smaller than the G8 19" front. If you used this tire on the G8, it would be about 3 mph optimistic at 60. The stock tires are almost exact GPS vs. Digital Speedo.
17 x 9 w/275-40-17 Bridgestone 750's are 46 lbs. They are 10.9" wide with a tread of 10.0" and turn 811.
If you are trying to save weight when racing, you would be savings 44 lbs by using these light weight wheels and 17" tires. Both custom sets of wheels have a hub diameter from a BMW = 72MM.
TPMS re-calibration was a snap!!!! worked correctly the first time, even with 2 inflated stock TPMS wheels in trunk..... (wondered why rears showed they were working on way home!)
--------------------------------------------------------------------------
FYI - I currently have Shuk wheels on my 09' G8. Speedo is only off by about 4%. This wheel and tire combo make the car much more responsive. Steering is noticeably different. Ride suffers... must be tire compound???
Have set of 19" staggered Breyton Race CS on order for 09'. Will weigh and post pix upon arrival. Shuks going back on GTO.