[gphin]

Originally Posted by kopter

So I had a test drive a couple of days back, and to be honest the car was pretty stiff on the 21 Run flat wheels and standard M suspension.

The roads around are not that good, so as a daily driver (15 km to work), it will be not very comfortable. But the engine was mind blowing

I'm now looking for some with an adaptive suspension and hope to find it.

But the dealer offered me a completely new X235i (with a similar build - panoramic roof, etc.) for even less than a 1-year-old X3.

What do you think about the new X2? Has anyone had a chance to ride it and can compare it with the X3?

I will have a test drive on a new GLC 300 (190kw), the engine will definitely not be even close to 40i, but the interior looks very interesting

See if the dealer can swap the 21" RFT to 19" non-run flats. There will be a noticeable improvement in ride quality.

[arRod1981]

Originally Posted by Leem40i

The big thing to remember is that most tire places are not going to do it due to liability reasons. They can't confirm with enough confidence that there was no further damage done to the run-flat. Each manufacturer has strict guidelines on when a patch can be performed. By the time you get to the tire place there's no way they can confirm that those guidelines were followed. The fact that you got yours repaired is a unique situation but most times professional tire places will say no. When it comes to handling the run-flat does not and cannot perform and provide the same ride comfort as a non-run flat. It's just physics. Whether or not you're okay with the way yours feel is completely subjective however if you compare that same Tire to its equivalent non-run flat you would notice the difference right away. Performance testing also shows the difference

https://www.tirerack.com/upgrade-gar...es-be-repaired

Actually, Sportstick experience is not unique. Discount Tire here in San Antonio patched a hole in my Hankook RFTs back in February without issue. I had a very slow leak, took it to them, and they repaired without issue since it was in a repairable spot of the tire.

[Sportstick]

Originally Posted by Leem40i

The big thing to remember is that most tire places are not going to do it due to liability reasons. They can't confirm with enough confidence that there was no further damage done to the run-flat. Each manufacturer has strict guidelines on when a patch can be performed. By the time you get to the tire place there's no way they can confirm that those guidelines were followed. The fact that you got yours repaired is a unique situation but most times professional tire places will say no. When it comes to handling the run-flat does not and cannot perform and provide the same ride comfort as a non-run flat. It's just physics. Whether or not you're okay with the way yours feel is completely subjective however if you compare that same Tire to its equivalent non-run flat you would notice the difference right away. Performance testing also shows the difference

https://www.tirerack.com/upgrade-gar...es-be-repaired

I don’t at all doubt your point about the physics of a stiffer sidewall. It does seem that experience and technological advancements have improved RFT performance above the earlier models. As to patching, Discount Tire/America’s Tire/Tire Rack are one very large company with a national footprint. Experience and knowledge appears to have advanced repair techniques as a tread puncture repair was accepted by them as a non-issue, even before they knew the tire brand (It was Michelin). This does not seem to any longer be an exception. As to ride, yes, the same tire with a non-RFT sidewall will be more compliant. However, product development seems to have evolved to provide a much more pleasing ride than previously. The 19” Dueler performance is well within a range that I believe most would find more than acceptable. We find it comfortable. If someone wishes the benefits of RFT, I don’t believe earlier experiences are a current reason for continuing the same level of skepticism as years past.