Run flat tires

Run flat tires

I follow the forums, but I don't remember the subject of run flat tires coming up before. Probably has, but, anyway, what is the opinion on run flat tires? It seems like an obvious choice for a car with no spare tire. I guess you get higher unsprung weight, which might affect performance a hair. Are they quieter? Any thoughts appreciated.

jordanrichard | 11 oktober 2019

No, you don’t want run flats. One they are heavier which will affect range. They are also stiffer than a regular tire. Lastly, the tire manufacturers have gone from promoting these tires as a way to get to the nearest tire shop to get a repair to, don’t repair but rather replace the tire. So, you pay more for the tire itself, it affects range, and in net affect, they are unrepairable tire.

stingray.don | 11 oktober 2019

My Corvette came with run flat tires (traded it in on the Tesla) and they created a lot of road noise. I would not want to go back.

sabbia | 12 oktober 2019

After two flats I put run flat tires on my Model S. I did this after talking to Tesla support. I have experienced absolutely no downside. If there is loss of range it is negligible. If there is a loss in 0-60 time I haven't noticed it and I think I would prefer that to calling a flat bed truck.

Highly recommended.

Tesla2018 | 13 oktober 2019

Sabbia-Did you notice any change in handling? I dont care about road noise or decreased range but dont want it to affect the way the car feels. What brand did you go with?

Yodrak. | 13 oktober 2019

Run-flat tires have very stiff sidewalls, which is why you can continue to ride on them when a tire looses air. The ride will be different.

hvopov335903 | 14 oktober 2019

I think it is denagerous and uncomfortable running with flat tyres, which would influence you driving experience. So for yor car safety, it is advised to regularly check and inflate your tyre pressure once a time every fortnight since tyre maintainence is easily negelected by drivers.

tessnme | 14 oktober 2019

Thanks for the input everyone.

hvopov: The built in tire pressure sensors are accurate. I check it often, but I only use a tire pressure gage when adding air. My father was a tire dealer, so it's in my blood to check tire pressure.

I've decided on the Michelin Primacy Acoustic tires. Expensive, but a 20% reduction in tire noise is worth it. Michelin's website has a good writeup on the advantages. The tire absorbs sound waves right at that "thunk" point in the spectrum. I've been driving a Tesla for 6 years now with no flats, so the disadvantages of run flat outweigh the possible bad day with a flat.

sabbia | 17 oktober 2019

Under normal conditions on my Model S, I find no difference between the run flats and the tires that came with the car. I noticed no change in noise or handling. But that is so subjective maybe others will notice a difference. I definitely did not.

hvopov. I don't know about others, but I have no intention of driving with the run flats while the tires are compromised. For me they are for an emergency case. When the tire is compromised the run flat is used to get me to where the tire can be repaired or replaced. I suspect most people do intend to use run flats with a flat tire.