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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 > Potenza RE050A RFT vs Potenza RE050A I RFT



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      03-16-2010, 03:46 PM   #1
Bagelfast
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Potenza RE050A RFT vs Potenza RE050A I RFT

So my 2007 E92 335i sport came with Potenza RE050A RFT tires and the ride is really ruff and i gets bubbles on the front tires all the time.

My 2010 E90 LCI 335i m-sport came with Potenza RE050A I RFT.

What does the I stand for? The E90 seems to ride a bit smoother aswell.
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      03-16-2010, 03:53 PM   #2
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I know there was supposed to be an improved "2.0" version of the RE050A tire coming out. Read about it last November. Maybe it's the improved version of the tire. Why Bridgestone gave the "improved" tire the same model name, I'm not sure.
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      03-16-2010, 04:51 PM   #3
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3.0, not 2.0
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      03-16-2010, 07:23 PM   #4
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Per Tirerack Potenza RE050A I RFT is the latest version.
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      03-16-2010, 09:36 PM   #5
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Pretty sure these are not the "3G" RE050A's that Japan already has. Tirerack already has Potenza RE050A I and Potenza RE050A II in stock, both of which have been available for a while.
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Last edited by jopa489; 03-16-2010 at 09:50 PM. Reason: Typo
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      03-16-2010, 09:46 PM   #6
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I've wondered about Bridgestone tires, since I have to put new rubber on my 330xi, and Bridgestone was one of the candidates. My other car is a 335i, MY2009, and came with Bridgestones RE050A I RFT, which conforms to the excellent table SCA posted. I thought RE050A was the first and R050A I the second generation RFT. A third generation Bridgestone has been announced and received the usual accolades, but is not available anywhere I know for purchase. Also, the designation of the tire AFAIK has not been published (RE050A II ?).
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      03-17-2010, 03:27 AM   #7
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IMO bridgestone= Crap
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      03-17-2010, 03:38 AM   #8
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Quote:
Originally Posted by acerboo View Post
IMO bridgestone= Crap
there is a new generation mf potenza rft coming...i have a document but it is in german...
they promise improvment...
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File Type: pdf 3 Generation_Run Flat-Reifen_Detailinfos.pdf (1.04 MB, 266 views)
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      03-17-2010, 05:10 AM   #9
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I noticed a second option for tires at tire rack also a few weeks ago. I also read in Roundel that Bridgestone was developing a newer version of the RFT that has similar charcteristics of a regular tire. Hard to understand because they feel like lead weights!

Thats all I have heard...if the second generation is out...the marketing department has been quiet.

This thread would probably get more results over in the wheel & tire section.
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      03-17-2010, 05:56 AM   #10
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I have Bridgestone RE050A II. I like them, to be honest. I have 20.000 miles on them and they still have tread. They are pretty soft over bumps, but I read the Michelin PS2 RFT are softer (but wear faster).
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      03-17-2010, 06:36 AM   #11
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Quote:
Originally Posted by cstavaru View Post
I have Bridgestone RE050A II. I like them, to be honest. I have 20.000 miles on them and they still have tread. They are pretty soft over bumps, but I read the Michelin PS2 RFT are softer (but wear faster).

One thing I have noticed is the sidewall is significantly thicker (wider) on the PS2 RFT vs. the RE050A RFT. I still have my factory Bridgestones while a family member has had the PS2s for over a year. BTW, the ride with the PS2s is dramatically improved.
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      03-17-2010, 07:35 AM   #12
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Quote:
Originally Posted by cstavaru View Post
I have Bridgestone RE050A II. I like them, to be honest. I have 20.000 miles on them and they still have tread. They are pretty soft over bumps, but I read the Michelin PS2 RFT are softer (but wear faster).
I had a set of the RE050 II's also. They weren't as bad as people said, but non-runflats definitly ride better, handle just as good, and cost way less. I am rolling on 17's though.
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      03-17-2010, 08:32 AM   #13
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Quote:
Originally Posted by cstavaru View Post
I have Bridgestone RE050A II. I like them, to be honest. I have 20.000 miles on them and they still have tread. They are pretty soft over bumps, but I read the Michelin PS2 RFT are softer (but wear faster).
About 7500 on mine, with 90% tread (PS2 ZPs). I'd say mine are probably going to last longer than yours. :P
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      03-18-2010, 12:51 PM   #14
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The RE050A I ride alot better than the Regular RE050A... i have two cars with both tires on them so i knpow exactly how they feel, and the 'I' tire is ALOTT softer over bumps and rides better... so i would def go for the 'I' if that is the new generation, its 100x better than the regular ones IMHO.
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      03-20-2010, 08:11 AM   #15
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Quote:
Originally Posted by Oulixes View Post
I've wondered about Bridgestone tires, since I have to put new rubber on my 330xi, and Bridgestone was one of the candidates. My other car is a 335i, MY2009, and came with Bridgestones RE050A I RFT, which conforms to the excellent table SCA posted. I thought RE050A was the first and R050A I the second generation RFT. A third generation Bridgestone has been announced and received the usual accolades, but is not available anywhere I know for purchase. Also, the designation of the tire AFAIK has not been published (RE050A II ?).
RE050A II has been available since 2008.
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      11-30-2011, 09:39 PM   #16
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Is it ok to mix the old and new versions? Tread looks the same
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      05-07-2012, 12:25 PM   #17
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Quote:
Originally Posted by CosmosMpower View Post
Is it ok to mix the old and new versions? Tread looks the same
Digging up an older thread. Find myself in the same situation as above - trying to figure out the difference between these various sub-models RE050A...

Spoke to a technical person at Bridgestone and he seemed to insist that there is no problem mixing these tyres, however since the construction is slightly difference (plus now I see that there are differences in tread depth, width and even diameter), so it will be a problem on the same axle - might cause a certain degree of tyre pull. But same pairs on the same axle should be fine, I would think especially when you have narrow/wides etc.

But, I still am concerned that Tirerack makes a point to say that Bridgestone suggests that you may not mix them...
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