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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Wheels and Tires Forum Sponsored by The Tire Rack > Here's what 159 weighs...how much do ASA AR1's weigh with tires?



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      04-05-2006, 04:55 PM   #1
bringsmewomen
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Here's what 159 weighs...how much do ASA AR1's weigh with tires?

159 weighs about 55 lbs with the run flat tires.
How much do 19" ASA AR1's weigh with tires with Kumho SPTs? I know the rims itself weigh 26 lbs in the front and 28.7 in the back according to Tire Rack. So there's no way a tire would be more than 10lbs each right? That means if it's 10lbs tops, each wheel would either be 36lbs or 38.7.
In other words:
Stock 159's with run flats:
4 x 55 = 220.

ASA AR1's with tires
2 x 36 = 72
2 x 38 = 76

72 + 76 = 148.

Stock 220lbs - ASA 148lbs = 72lbs lighter!!!


I am actually dropping 72lbs if the tires are 10 lbs by switching from stock 17's to ASA 19s!

Can anyone tell me the real weight of the tires? Maybe its even less. So even with wider tires, I probably wind up with a faster car and saving on gas!

Last edited by bringsmewomen; 04-05-2006 at 05:54 PM.
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      04-05-2006, 07:10 PM   #2
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Quote:
Originally Posted by bringsmewomen
159 weighs about 55 lbs with the run flat tires.
How much do 19" ASA AR1's weigh with tires with Kumho SPTs? I know the rims itself weigh 26 lbs in the front and 28.7 in the back according to Tire Rack. So there's no way a tire would be more than 10lbs each right? That means if it's 10lbs tops, each wheel would either be 36lbs or 38.7.
In other words:
Stock 159's with run flats:
4 x 55 = 220.

ASA AR1's with tires
2 x 36 = 72
2 x 38 = 76

72 + 76 = 148.

Stock 220lbs - ASA 148lbs = 72lbs lighter!!!


I am actually dropping 72lbs if the tires are 10 lbs by switching from stock 17's to ASA 19s!

Can anyone tell me the real weight of the tires? Maybe its even less. So even with wider tires, I probably wind up with a faster car and saving on gas!
Hate to ruin your day but the tires weigh MUCH more than 10 lbs. While I don't know the weights of the Kuhmos the weights of the Eagle F1s are 24 pounds for a 235/35/19 and 26 lbs for a 265/30/19. These are typical weights for tires this size. This yields a total weight with your ASA-AR1s of:
Front = 72+48 = 120
Rear = 76 + 52 = 128
Total = 248 or 28 pounds more. Plus the weight is further out from the center than on the stock tires. Therefore there will be no performance gain in acceleration or deceleration. Sorry.

Last edited by HeelToe; 04-05-2006 at 07:45 PM.
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      04-05-2006, 07:29 PM   #3
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Quote:
Originally Posted by mdemange
Hate to ruin your day but the tires weigh MUCH more than 10 lbs. While I don't know the weights of the Kuhmos the weights of the Eagle F1s are 24 pounds for a 235/35/19 and 26 lbs for a 265/30/19. These are typical weights ofr tires this size. This yields a total weight with your ASA-AR1s of:
Front = 72+48 = 120
Rear = 76 + 52 = 128
Total = 248 or 28 pounds more. Plus the weight is further out from the center than on the stock tires. Therefore there will be no performance gain in acceleration or deceleration. Sorry.
Ouch! Talk about bursting his bubble!!! hahah.. But I do agree that RFT are very heavy and I wouldn't be surprised if he did shed a pound or two.
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      04-05-2006, 07:50 PM   #4
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bringsmewomen didn't even add right.
Front wheels 26lbs = 52
Rear wheels 28.7lbs = 57.4

Front tires 24lbs = 48
Rear tires 26lbs = 52

Fronts 52+48 = 100lbs
Rears 57.4+52 = 109.4lbs

Grand Total of 209.4lbs with an awesome 10.6lbs saved
I'm sure he can shave some time at the track.
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      04-05-2006, 07:52 PM   #5
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Quote:
Originally Posted by E90Boy
bringsmewomen didn't even add right.
Front wheels 26lbs = 52
Rear wheels 28.7lbs = 57.4

Front tires 24lbs = 48
Rear tires 26lbs = 52

Fronts 52+48 = 100lbs
Rears 57.4+52 = 109.4lbs

Grand Total of 209.4lbs with an awesome 10.6lbs saved
I'm sure he can shave some time at the track.
woops. teehee. Well 10 lbs is better than a weight gain.
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      04-05-2006, 07:53 PM   #6
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Quote:
Originally Posted by NSM
Ouch! Talk about bursting his bubble!!! hahah.. But I do agree that RFT are very heavy and I wouldn't be surprised if he did shed a pound or two.
Yeah, i just realized I was wrong.
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      04-05-2006, 07:59 PM   #7
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Well, after a little search it seems those AR1's aren't even as light as the OEM 162's

Style 162 | 18 x 8.0 | 11.226 kg x 2.2 = 24.6972 lbs
Style 162 | 18 x 8.5 | 11.926 kg x 2.2 = 26.2372 lbs

If you're really looking for a performance increase you may want to look into other wheels. Of course they'll cost ya. You can do a search for wheel weights here and find tons of different choices and their weights.
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      04-05-2006, 08:04 PM   #8
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Here are the specs from Tirerack.com
Kumho SPT 235-35-19 (25lbs)
265-30-19 (29lbs)

Copied from previous post:
Front wheels 26lbs = 52
Rear wheels 28.7lbs = 57.4

Total: 217.4 lbs

The tires weigh almost the same as the wheels! But, you will end up saving a couple of pounds, overall.
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      04-05-2006, 08:19 PM   #9
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I'm gettin myself some titanium rims they're like 10lbs per wheel at 19"
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      04-05-2006, 09:18 PM   #10
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Quote:
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I'm gettin myself some titanium rims they're like 10lbs per wheel at 19"
They'll also bend a lot easier.
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      04-05-2006, 09:39 PM   #11
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Quote:
Originally Posted by bringsmewomen
They'll also bend a lot easier.
Not likely, they would probably weigh a ton though. Problem with Ti is it's denser than Al but also much stronger. The spokes of a Ti rim would have to be so thin to make it light it's not practical. The cost would be insane too. Cast Ti is $$$$$$. Stick to forged Al.
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      04-06-2006, 10:28 AM   #12
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Yeah, but those are measely 18" wheels.

We're talking 19" here. 8.5 fronts and 9.5 rears. with wider tires.

Quote:
Originally Posted by Ghunger
Well, after a little search it seems those AR1's aren't even as light as the OEM 162's

Style 162 | 18 x 8.0 | 11.226 kg x 2.2 = 24.6972 lbs
Style 162 | 18 x 8.5 | 11.926 kg x 2.2 = 26.2372 lbs

If you're really looking for a performance increase you may want to look into other wheels. Of course they'll cost ya. You can do a search for wheel weights here and find tons of different choices and their weights.
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      04-06-2006, 12:23 PM   #13
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I think that's the biggest difference in any mod I've done to any car I've had.. I bought a set of kosei k1's 16.5 lbs each as my track wheels, and lost the runflats. It's about a 15 lb difference each corner. It made a HUGE difference on throttle response.
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