QFT right there.

 

boys 120 is nothing lol I’m not trying to say nothing but 120 is what I usually drive in Canada as well... it’s nothing like going 170 kmph and up so sit back down

 

jdanielca

You are saying you run your LS at 170 knot per hour? That is a 196 mph? I would be more concerned with the speed rating. I blew the right rear tire on a 1968 Ford station wagon back on 20 Sep 1968 doing a 105 mph and it will get your attention.

Dennis

 

According to many at the Mercedes Benz Forum, the newer run flat tires that come as OEM on the flagship S550 are vastly improved. Some have posted that the ride is similar to a regular tire. But, the S550 has air suspension.

 

so do you know what the oem on that is ? Maybe I’ll find it

 

where did I say knots? 170kmph kilometres per hours .... but 105mph is close enough to 170kmph and I think having run flats in that situation would probably save me and keep the vehicle from losing control compared to a normal tire in a similar situation

 

jdanielca

My mistake I read that as knots per hour not kilometers per hour. I thought doing a 170 knots was exceeding the LS's limits but then I have driven in Europe so I know that they do get it on going down the Autobahn.

Dennis

 

There's plenty of documentation about tread seperation and run-flats, so if you think you're somehow immune to an at-speed blowout I wouldn't be so sure.

 

immune probably not, less likely to lose control when it happens.. as much as a normal tire... u don’t think so ?

 

It really depends on the scenario. What you would call a normal "blow out" due to loss of air pressure, then obviously a run flat provides better control. I'm sure run flat technology has gotten better as the years progress, however they've had a higher rate of outright failure of the tread/sidewall mating over traditional tires-what you would call a defect. Which means they're more likely to have tread seperation.
I feel like the chances of this happening are statistically low however, especially for a new tire made in 2018/2019.