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I refuse theory about heavier car with RFTs

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Old 03-10-2007, 11:09 AM
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From the Bridgestone website.

Potenza RE050 RFT 245/40/10 31Lbs

Potenza RE050 Non RFT 27Lbs.

The RFT is 14.8% heavier.

Might not seem a lot, but ask a racing driver about adding 4lbs unsprung weight to each corner, he would not be amused.

Unsprung weight makes quite a difference to handling.

Now, if you change rims you could well end up with heavier 'corners' but that is not the point, the issue raised was the weight advantage/disadvantage of RFT's.
Old 03-10-2007, 11:28 AM
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Originally Posted by KAF' post='401202' date='Mar 10 2007, 10:09 PM
From the Bridgestone website.

Potenza RE050 RFT 245/40/19 31Lbs (edit19)

Potenza RE050 Non RFT 27Lbs.

The RFT is 14.8% heavier.

Might not seem a lot, but ask a racing driver about adding 4lbs unsprung weight to each corner, he would not be amused.

Unsprung weight makes quite a difference to handling.

Now, if you change rims you could well end up with heavier 'corners' but that is not the point, the issue raised was the weight advantage/disadvantage of RFT's.
OK, that's 51.6Lbs total (167rim+RFT) 23.4 Kg. ...not bad at all, for bigger (245/40/19) RFTs, than Andy's 26.6Kg. with smaller (245/35/19) standard tyres setup.
Old 03-10-2007, 01:05 PM
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Originally Posted by nicke60gre' post='401175' date='Mar 10 2007, 07:42 PM
Faulty scale :thumbsdown:

http://forum.e46fanatics.com/showpost.php?...p;postcount=813

I'm gonna burn them
340 Rwhp
No comment
Ah, sorry, I forgot new engine + ESS .
340 RWHP ? 400 HP at the engine starting from 231 hp ?
Old 03-10-2007, 01:52 PM
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Originally Posted by AlexFW' post='401248' date='Mar 11 2007, 12:05 AM
Ah, sorry, I forgot new engine + ESS .
340 RWHP ? 400 HP at the engine starting from 231 hp ?
ESS TS2+




http://forum.e46fanatics.com/showthread.php?t=404585
Old 03-11-2007, 01:39 AM
  #25  
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Originally Posted by nicke60gre' post='401256' date='Mar 10 2007, 11:52 PM
Unbelievable! But that is a Z4 that is lighter .. Probably you will achieve to reach 17-18s, like me when I will have finished mods .
Question : if the simple stage2 from VF will bring 545i to 520-530 HP ... And If you have exhaust, kat, headers etc. and you arrive to 550-600 HP ... With 8 PSI by ESS what hell .. ? 700 ?
Crazy .

PS :
Nick, do you know that you will have 550i consumption, with the 3.0i kompressor ?



Yes, I know ...
Old 03-11-2007, 03:02 AM
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Originally Posted by AlexFW' post='401410' date='Mar 11 2007, 12:39 PM
Unbelievable! But that is a Z4 that is lighter .. Probably you will achieve to reach 17-18s, like me when I will have finished mods .
Question : if the simple stage2 from VF will bring 545i to 520-530 HP ... And If you have exhaust, kat, headers etc. and you arrive to 550-600 HP ... With 8 PSI by ESS what hell .. ? 700 ?
Crazy .

PS :
Nick, do you know that you will have 550i consumption, with the 3.0i kompressor ?
Yes, I know ...
Yes, I know that Z4 is much lighter, but I'm talking about the 3.0 M54 Engine.

No that much, there are reviews that they've measured the consumption at 10lt./100km. on 600 km highway driving with 160 km/h average speed, but as always, it depends to the drivers foot
Old 03-11-2007, 06:33 AM
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Originally Posted by nicke60gre' post='401413' date='Mar 11 2007, 12:02 PM
Yes, I know that Z4 is much lighter, but I'm talking about the 3.0 M54 Engine.

No that much, there are reviews that they've measured the consumption at 10lt./100km. on 600 km highway driving with 160 km/h average speed, but as always, it depends to the drivers foot

I don't believe to 10 kml : Mini Cooper S (R53) covers less than 9 km with a liter of gas (130 kmh average speed) ... And 6 in the city .
Old 03-19-2007, 11:00 PM
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Very interesting threat.
But how is the driving with 19 " RFT?

17" RFT tires are very bad.
Old 03-19-2007, 11:00 PM
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Very interesting threat.
But how is the driving with 19 " RFT?

17" RFT tires are very bad.
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