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Discussion Starter · #1 ·
My 2008 535i Sport is now one month old, soon i will need to change tires. If i put all season high performance tires my only choice is non RFT. Some say the car will not be the same because it's tuned to the stiffer sidewalls of the RFT if that is not a big issue then all seanson non RFT is fine. Another option is getting anew set of 17" wheels with a higher profile tire so that the rim is more protected cause i'm told that the RFT will protect the wheels more than the Non RFT due to the thinner sidewalls.

I would Really Appreciate Some Advice on this Topic Thank You.
 

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I replaced my RFTs after 18 months, and the ride quality improved. Do a search--I've posted comments on my recently installed Bridgestone Potenzas.
 

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Australian 545i
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I have a 2005 545i Sports with 18" wheels. At first, the Dunlop RFT's seemed fine, but I soon got tired of the harsh ride quality. After a while, the RFT's developed feathered edges on the tire blocks which caused vibration and noise that got progressively worse and worse.
I have recently changed to non-RFT's, and they are significantly better in terms of ride and especially noise. Grip seems about the same. Also the non-RTF's are much more reasonably priced (RFT's are over $700 each in Australia !!), and non-RTF availability is better. The new tires are Dunlop SP Sport Maxx, bit I don't know if they are available in the US.
 

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Cscott,

The RFT was one of the things I didn't really want. Had them on my C5 and they make for a stiffer ride. That was okay on the vette, but not something I wanted on my 08 550i. But when I picked her up, I did buy a 5 year tire/wheel policy for $800.00.

Since I have the sport package with the low profile tires I figured it was good insurance against any problems. The guy that walked me through the delivery just replaced 2 tires and 2 wheels due to hitting a pot-hole and the cost was over $1200 on a Z4. Pretty sure it would be more for two 19" rims and tires - safe bet.

later,
 

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Cscott,

The RFT was one of the things I didn't really want. Had them on my C5 and they make for a stiffer ride. That was okay on the vette, but not something I wanted on my 08 550i. But when I picked her up, I did buy a 5 year tire/wheel policy for $800.00.

Since I have the sport package with the low profile tires I figured it was good insurance against any problems. The guy that walked me through the delivery just replaced 2 tires and 2 wheels due to hitting a pot-hole and the cost was over $1200 on a Z4. Pretty sure it would be more for two 19" rims and tires - safe bet.

later,
Do you have run-flat tires? I thought the 2008 550i with the Sport Package came with non run-flat tires.
 

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Go with non RFT tires. The ride quality will be worth it.
 

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Do you have run-flat tires? I thought the 2008 550i with the Sport Package came with non run-flat tires.
LoneStar5,

You're correct ... sport package does not come with RFT's. But I considered putting them on for the wife and decided against it.

later,
 

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Discussion Starter · #8 ·
Thanks Guys but one question still remains i am told that Non RFT will not protect the as much as a RFt. Supposedly when you hit a pothole the thinner sidewall of a nonRFT will grind your wheel and damage it also anybody have anny thoughts on that

THANK YOU
 

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Cscott
After driving my 545i with both RFT's (for 3 year) and non-RFT's, I would definitely advise to go with the non-RTF's as the advantages in terms of ride quality, noise and replacement price far outweigh the remote possibility of damaging a wheel on a pothole. Anyway, I am not convinced there would be a significant difference between a RTF and a non-RTF in that circumstance anyway.

Also I can't notice that RFT's have any disadvantage in terms of grip/handling.
 

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2021 540xi M Sport / Premium / Driving Assistance Plus / Parking Assistance
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Thanks Guys but one question still remains i am told that Non RFT will not protect the as much as a RFt. Supposedly when you hit a pothole the thinner sidewall of a nonRFT will grind your wheel and damage it also anybody have anny thoughts on that

THANK YOU
I have heard the exact opposite. The thicker rubber of the RFT, and less air inside, allows more of the impact to be transferred to the rim, not absorbed by the tire, and thus increases the chance of damaging the rim. But I do not have any evidence this is true. Would be curious if anyone has a definitive answer.
 

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RFT Bent my Wheels

All four of my rims on my 08 535i sport were bent in the first 2K miles. The dealer would not fix them but admitted this was a common problem. They wanted to charge us $175 a wheel to straighten them and we talked them into a free wheel alignment.

I just happened to work next to a wheel specialist called USA Wheels in Fairfield, NJ and found out they fixed the wheels for all the local dealers. We paid less then 1/2 the price of the dealer and then took it back to them for the free alignment. USA Wheels also said this is common with the RFT tires and the size of the sport wheels. Because of the hard sidewalls and the low profile you hit one pot hole and they are done! RFT are supposed to be the wave of the future but they are not perfected. We are the guinea pigs and I think it sucks.
 

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All four of my rims on my 08 535i sport were bent in the first 2K miles.
Were you able to see this with the naked eye?

I'm at 3,000 miles now and don't see any evidence of bent rims or bubbles in the tires, despite hitting a few potholes and plates in the road that made me cringe.
 

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I would not accept run flats. Part of the problem with the sport suspension package ( besides the run flats ) are the 18 inch wheels. Anything above 17 inches and you are really asking for problems unless you can really avoid all potholes..........a real problem in the Northeast.
 

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This may be a stupid question, but....

for those of you that changed to non-run flat tires, what would do you do if you get a flat since there is no spare tire? Just call roadside assistance and wait? Just curious.
 

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All four of my rims on my 08 535i sport were bent in the first 2K miles...
Unfortunately, we live in an area (NJ/NYC/Philly) where the road conditions are the worst. Crackes and potholes are everywhere. That's also one of the reasons I didn't go for the 18-inch and 40 tires for my 2008 535.

Tha said, another factor for considering SP/RFT - where you live.
 

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The standard 535 comes with a spare
 

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Ok...

The standard 535 comes with a spare
My 535i has run flats and no spare, so if I opted to switch to non-run flats, what would I do if I got a flat?
 

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for those of you that changed to non-run flat tires, what would do you do if you get a flat since there is no spare tire? Just call roadside assistance and wait? Just curious.
I did not read your post carefully enough before.

The 535 should have a space in the trunk for the spare which you could obtain from the dealer? You would need to make sure you had a jack and any other adapters, etc. that might be needed.

Or, you could go the route that Porsche uses. Get a can of goo and an air pump to fill the tire. Porshes have no spare and no runflats just the can and air pump.
 

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Or, you could go the route that Porsche uses. Get a can of goo and an air pump to fill the tire. Porshes have no spare and no runflats just the can and air pump.
GM does the same with the Malibu/Aura "Hybrid" (start/stop, 36V batts in the trunk). Not that I am comparing a BMW to a Malibu, but just saying that in a somewhat mainstream car someone deemed this acceptable.
 
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