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E89 Z4 (2009 - current)

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  #1  
Old 08-15-2010, 07:15 PM
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Rolf-Dieter Rolf-Dieter is offline
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RFT on 19" Wheel changed to Standard Tire

Have you replaced your RFT with Standard Tires on the 19 Inch Wheels?

If so can you share with us...

A) Type of Tire you now have

B) How many miles / KM have you driven on the new tires

and

C) How would you rate them on a scale of 1 to 10 compared to the RFT

Thanks for sharing,

Cheers,

Rolf-Dieter
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  #2  
Old 08-16-2010, 11:20 AM
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Not a lot of use to you but I intend re-new with run-flat tyres, for me they are a better ride on 19" than my old E85 Z on 18" with run-flats
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  #3  
Old 08-16-2010, 08:27 PM
Banton Banton is offline
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Anxious to see the answers on this question. Thanks for asking it, Rolf-Dieter.
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  #4  
Old 08-18-2010, 06:03 PM
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Quote:
Originally Posted by Banton View Post
Anxious to see the answers on this question. Thanks for asking it, Rolf-Dieter.
Looks like not too much interest here Banton, sorry
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  #5  
Old 08-18-2010, 07:29 PM
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Rft

Since it's my wife's daily driver we will keep the RFT's........
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  #6  
Old 08-18-2010, 07:59 PM
Banton Banton is offline
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Rolf-Dieter

No, I guess not, but I still plan on changing. I am going to stick with a 30 aspect tire but will go wider with a more pronounced sidewall. If the wheel is the issue, the increase in tire volume should help driving over rougher roads.
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  #7  
Old 08-19-2010, 02:25 PM
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Quote:
Originally Posted by Banton View Post
Rolf-Dieter

No, I guess not, but I still plan on changing. I am going to stick with a 30 aspect tire but will go wider with a more pronounced sidewall. If the wheel is the issue, the increase in tire volume should help driving over rougher roads.
Sounds like a plan I am still waiting for BMW to get back to me with a cheque and another wheel. Then I'll make my move on the tire. Meanwhile I am looking for more opinion on the front and rear wheel size.

My M3 (sold this year in early spring) had 19 inch wheels and regular tires, never ever did I have an issue. Will keep you posted.
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I drove a Z4 35i across the USA in 2010 & loved it.
Somehow I just had to get back into the /// M3 and so I did.
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  #8  
Old 08-19-2010, 03:36 PM
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I'll chime in with my 2 cents:

On my E93 I took off the RFTs immediately after delivery and installed a set of Yokohama ADVAN S4s in the OEM sizes on 18" CSL wheels. Ride was markedly improved, handling did not suffer and I had no problem for the 2.5 years that I owned the car. Sold the RFTs for almost enough money to buy the non-runflat tires.

Did the same thing on my E89 Z4 except I went with the new Yokohama ENVigor UHP AS tires. So far so good but only have 3000 miles on the tires in 6 months of ownership.

Would I do it again? YES. I do not like the ride, feel or cost of the RFTs. I know they are supposed to be getting better but they still weigh more, ride worse, cost more, etc.

OK, maybe this is more like 5 cents.

Cheers!
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  #9  
Old 08-19-2010, 03:45 PM
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Quote:
Originally Posted by rmorin49 View Post
Sold the RFTs for almost enough money to buy the non-runflat tires.
This is what I plan to do when I get my car. Out of curiosity, how did you sell your tires? Craigslist?
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  #10  
Old 08-19-2010, 05:55 PM
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Quote:
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This is what I plan to do when I get my car. Out of curiosity, how did you sell your tires? Craigslist?
E90post.com
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2010 Z4 s30i Alpine White/Beige
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  #11  
Old 08-19-2010, 06:12 PM
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E90post.com
Thank you.
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  #12  
Old 08-20-2010, 01:02 PM
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I'll keep the run flats until I need to replace the tires. The ride is really pretty good.
How many miles should I expect to get from the original tires with fairly normal daily driving?
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  #13  
Old 08-20-2010, 01:06 PM
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I'd say you will wipe off the rear within 10k and the front would last until 15k. Of course it depends on the way you drive and the roads you drive on too.
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  #14  
Old 08-20-2010, 01:10 PM
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Wow! Is that all? How many would you expect from non run-flats?
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  #15  
Old 08-20-2010, 01:24 PM
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Well this is also because we have these Bridgestone RE050 which are only rated 140 for treadlife... The same tires in non RFT are rated the same but have the reputation not to wear as fast as RFTs. I do not know how long they would last though. For reference the PS2 on my 330CI of the same size are have a 220 rating and last me about 20k.
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  #16  
Old 08-20-2010, 03:56 PM
Mr Breeze Mr Breeze is offline
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My plan as well - wear out the RFT's and change out at that time. (I'm not ready to toss out $1500 worth of tires right now) Not sure what I'll replace with, but by then there should be some here who have some experience/opinions on the best options.
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  #17  
Old 08-20-2010, 07:37 PM
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I assume that there are advantages to having a lower treadwear rating, e.g. 140 on our Bridgestones. For example, is the tire compound softer resulting in better handling but shorter tread life?
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  #18  
Old 08-20-2010, 09:56 PM
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yes in general but it is more complicated than that. You will have some tires which will have better treadwear but handle just as well or better (PS2, GY F1 etc)
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  #19  
Old 08-20-2010, 11:40 PM
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Quote:
Originally Posted by rafale View Post
I'd say you will wipe off the rear within 10k and the front would last until 15k. Of course it depends on the way you drive and the roads you drive on too.
Rafale you must be turnin and burnin those rear shoes if you expect to wipe them at 10K.

My stones are the RE 050A RFT's on 19" 296's. My first almost 2K miles in Germany lots of curves and at least 750 miles sustained above 100mph. I was not pushing it in the corners as I was trying to avoid motion sickness of the Frau. I haven't even worn the tites (tire molding) off the inside edges of my rear tires yet. So far no sign of excessive rear camber related wear. I'm at an average of 10/32 F&R @ 2500 miles. At 9/32" available wear this projects out to 22.5K miles.

From the pics of Rolf-Dieter tires @ 18K km (~ 11K miles) aside from the abnormal/inside wear, the main portion of the tread seemed to be in good condition. Not knowing the tread depth I'd guess the rear tires would easily made it to 20K miles.

Rolf did/do you have any tread depth of your tires at removal? New is 11/32" or 8.7 mm for the RE 050A.
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  #20  
Old 08-20-2010, 11:47 PM
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You have been driving on very smooth german highways. Not on the grooved pavement here. From what I can see on Tirerack, people get 15k at most with these tires.
http://www.tirerack.com/tires/tires....ge&tab=Reviews
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  #21  
Old 08-21-2010, 12:05 AM
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HerrK

You have been driving on very smooth german highways. Not on the grooved pavement here. From what I can see on Tirerack, people get 15k at most with these tires.
http://www.tirerack.com/tires/tires....ge&tab=Reviews
I guess I must have driven on different German roads than you because they were not all pristine by any stretch of the imagination. Construction zones on the Autoban feature narrow uneven lanes and surface roads are in general not that much better than those in SoCal. When the Bahn is in good shape and weather/traffic conditions optimal yes they are smooth and unlimited fast. I hit my share of bumps in Germany. They are certainly better at patching potholes than in the states. Plus EU in general is better at keeping the pases clear of rain debris/gravel wash across the roadway.
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  #22  
Old 08-21-2010, 12:17 AM
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Well, I read more of the reviews and amazingly some people got 30k miles out of these tires. I don't know how it is possible. The vast majority though change them at about 13-15k in average. Some only after 5k. So Cal has pretty nice roads trust me. The concrete might be a little rough at some spots but compared to Oregon where people drive with studded tire in the winter even when there it snows an average of 7 days a year...
I only have 3000 miles on my car and I only drove 800 of them as I bought it used. The rear are already down to 8/32" I usually change my tires with about 2/32" left so I am basically 1/3 through the treadlife already.
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  #23  
Old 08-21-2010, 07:00 AM
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Quote:
Originally Posted by HerrK View Post
Rafale you must be turnin and burnin those rear shoes if you expect to wipe them at 10K.

My stones are the RE 050A RFT's on 19" 296's. My first almost 2K miles in Germany lots of curves and at least 750 miles sustained above 100mph. I was not pushing it in the corners as I was trying to avoid motion sickness of the Frau. I haven't even worn the tites (tire molding) off the inside edges of my rear tires yet. So far no sign of excessive rear camber related wear. I'm at an average of 10/32 F&R @ 2500 miles. At 9/32" available wear this projects out to 22.5K miles.

From the pics of Rolf-Dieter tires @ 18K km (~ 11K miles) aside from the abnormal/inside wear, the main portion of the tread seemed to be in good condition. Not knowing the tread depth I'd guess the rear tires would easily made it to 20K miles.

Rolf did/do you have any tread depth of your tires at removal? New is 11/32" or 8.7 mm for the RE 050A.
I will measure, calculate and then project the millage for change. I will get back to you. When I discovered the inside wear on both tires, I got in touch with my BMW service manager. He recommended to increase tire pressure in the back by 10% and I did that. The rear tire tread still looks fine. I now have 22,820 KM on the car (14,180 miles).

I'll get back to you and the thread depth
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  #24  
Old 08-21-2010, 11:31 AM
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Rolf-Dieter Rolf-Dieter is offline
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Quote:
Originally Posted by Rolf-Dieter View Post
I will measure, calculate and then project the millage for change. I will get back to you. When I discovered the inside wear on both tires, I got in touch with my BMW service manager. He recommended to increase tire pressure in the back by 10% and I did that. The rear tire tread still looks fine. I now have 22,820 KM on the car (14,180 miles).

I'll get back to you and the thread depth
I will post a new thread with my findings and calculations top side.
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  #25  
Old 08-25-2010, 07:33 PM
lionfish lionfish is offline
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When you guys say, RFT gives a harsh ride , What do you mean exactly? Harsh meaning, bumpy, stiff etc?
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