Not happy with the X5, is it the RFT?

[Jim E.]

Originally Posted by jeep

Not sure what you mean by ARS but Adaptive Drive has always been there as standard feature in the current generation M3.

M3's do not have Active Roll Stabilization (ARS). They only have Electronic Damping Control (EDC). EDC is sometimes referred to as VDC which is Vertical Dynamic Control.

BMW M3 Coupe - Model Highlights - Performance & Efficiency - BMW North America==

Adaptive drive is a combination of the two wihch is available on the X5 and now other vehicles in the BMW arsenal.

[buckeyewalt]

There really should be no issue in repairing a RFT or a non-RFT. The reason why they don't like to repair RFT is that they are very difficult to remove from the rim because of the very stiff sidewalls,,,and the price for repairing a RFT,,to some it's not worth it. I had a RFT repaired at a local shop,,charged me 18.50,,but it took them about 45 minutes of hard work to remove/patch/and replace the tire......

[fast4d]

2008 4.8 with SP

20 inch bridgestone duelers RF.

this gives a much more comfortable ride than our 2002 X5 SP with 19in tires.

E90 with RFT was horrible. bought a spare wheel/tore and switched to regular tires. experienced a big improvement.

[ard]

Originally Posted by buckeyewalt

There really should be no issue in repairing a RFT or a non-RFT. The reason why they don't like to repair RFT is that they are very difficult to remove from the rim because of the very stiff sidewalls,,,and the price for repairing a RFT,,to some it's not worth it. I had a RFT repaired at a local shop,,charged me 18.50,,but it took them about 45 minutes of hard work to remove/patch/and replace the tire......

Agrees that you can repair rfts

However I think the reason many refuse is this:

Tire can be driven on, and driven hard when flat- it can suffer overheating and internal trauma. This cannot always be ascertained by visual inspection- how it failed and how it was treated is critical. Owners lie. A shop may refuse simply as a risk management policy.

[buckeyewalt]

Originally Posted by ard

Agrees that you can repair rfts

However I think the reason many refuse is this:

Tire can be driven on, and driven hard when flat- it can suffer overheating and internal trauma. This cannot always be ascertained by visual inspection- how it failed and how it was treated is critical. Owners lie. A shop may refuse simply as a risk management policy.

Agree on your point also,,,,,But owners lie,, surely not

[BGM]

Originally Posted by ard

Agrees that you can repair rfts

However I think the reason many refuse is this:

Tire can be driven on, and driven hard when flat- it can suffer overheating and internal trauma. This cannot always be ascertained by visual inspection- how it failed and how it was treated is critical. Owners lie. A shop may refuse simply as a risk management policy.

Bingo.

[BGM]

Originally Posted by fast4d

2008 4.8 with SP

20 inch bridgestone duelers RF.

this gives a much more comfortable ride than our 2002 X5 SP with 19in tires.

E90 with RFT was horrible. bought a spare wheel/tore and switched to regular tires. experienced a big improvement.

If you had an e53 with 19" tires you had a 4.4 with Sport Package. And I believe those were (at least in OEM form) Michelin Diamaris which are a Z-rated tire and also a Summer tire---they won't ride as comfortable as the Duelers even with the Duelers being a RFT.

[jeep]

Originally Posted by Jim E.

M3's do not have Active Roll Stabilization (ARS). They only have Electronic Damping Control (EDC). EDC is sometimes referred to as VDC which is Vertical Dynamic Control.

BMW M3 Coupe - Model Highlights - Performance & Efficiency - BMW North America==

Adaptive drive is a combination of the two wihch is available on the X5 and now other vehicles in the BMW arsenal.

Got it, thanks for the explanation.

[GoVols!]

Here is another reason to skip the runflats:

Was in Costco yesterday and on a lark went into the tire shop to compare prices. Michelin Latitude 255/55/18:

RFT $330
non-RFT $318

Not a big difference right? Until you look at the treadwear/mileage ratings.

Non-RFT - 50,000 miles
RFT - 30,000 miles

In effect, you are paying almost double the price for the "convienence" of a bad/noisy ride and supposed piece of mind.

[buckeyewalt]

Originally Posted by GoVols!

Here is another reason to skip the runflats:

Was in Costco yesterday and on a lark went into the tire shop to compare prices. Michelin Latitude 255/55/18:

RFT $330
non-RFT $318

Not a big difference right? Until you look at the treadwear/mileage ratings.

Non-RFT - 50,000 miles
RFT - 30,000 miles

In effect, you are paying almost double the price for the "convienence" of a bad/noisy ride and supposed piece of mind.

Maybe the RFT in cars are different than the X-5, because trying to change a tire on one of those vehicles is difficult at best. I have the Bridgestone RFT on my SUV and except for some noise,,,I like them. The sidewalls are stiff,,no real roll to speak of,,and I don't worry too much about flats or having my wife out in it with a flat. I looked at the DWS, but I had them on my AMG, and the sidewalls were way to soft,,,good milage,,but you really noticed the soft flex walls. When you have a vehicle that weighs over 5000lbs, with a high center of gravity,,,sidewall flex and stability is my number one concern. Lets face it,,,with a X-5,,the twisties is about the last thing you would try although I must say,,with the RFT it does seem very stable. Final thought,,,if I ever got a flat,,the worst thing that would happen is that I would drive it to a tire store and have it repaired or replaced,,,if I put regular tires on,,,I would either need to call a tow truck,,or use the fix-a-flat can and ruin my TPMS which I would need to replace along with the repair......easy choice for me...RFT!