300 mph

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Not sure what tires he's going to try that with. If memory serves we're pretty much at the limit of what the tire manufacturers can do at the moment. They were balking at the 250+ mph speeds that Bugatti and Koenigsegg were shooting for here just recently.

Wonder if he's still taking customers money and car parts with nothing in return for them.
 
Originally Posted by ctechbob

Wonder if he's still taking customers money and car parts with nothing in return for them.


This...
 
The issue with these high speeds is that the fuel tank on the car empties within minutes, so any tire doesn't have to withstand hours at those speeds. Just sayin...
 
Originally Posted by ctechbob

Wonder if he's still taking customers money and car parts with nothing in return for them.


That's a good question.

I wouldn't trust anything he has to say.
 
Nearly all Jet aircraft tires are rated for use at 225 MPH and some of the 20 ply ones are rated at 250 MPH. They have zero issues at that speed and hold up perfectly. Shaving the tread down on those aircraft tires (to reduce load) allows land speed racers to use them reliably to about 325 MPH. I don't think it will be much of a stretch to make a well designed tire work reliably at 300 MPH.

Current land speed tires use many wire beads to hold the carcass together and have reached 700 MPH.
 
Originally Posted by Cujet
I don't think it will be much of a stretch to make a well designed tire work reliably at 300 MPH.

Airplane tires and car tires are very different, and if Michelin didn't have to literally reinvent the wheel for 300mph, we'd already have 300mph street tires and cars.

The Bugatti Chiron could probably touch 300, as could the Koenigsegg Agera.

The tires for these cars will be expected to handle 300mph without disintegrating, along with turning, braking, potholes, weather, and a wide range of temperatures.
 
Originally Posted by KGMtech
The issue with these high speeds is that the fuel tank on the car empties within minutes, so any tire doesn't have to withstand hours at those speeds. Just sayin...


So true. There are rather few places that 300MPH could be attempted. Even airports are way too short.
 
Originally Posted by rooflessVW
Originally Posted by Cujet
I don't think it will be much of a stretch to make a well designed tire work reliably at 300 MPH.

Airplane tires and car tires are very different,


You are correct. That's why many land speed record attempts have traditionally used modified aircraft tires. I've driven on them, they drive quite well and hold up to just about anything. Whether it would be practical or not is another matter. But I strongly suspect the technology is already there to make a tire that can withstand a 300 MPH run and meet the requirements of being "street legal". Whether that tire sees a public road or not is another matter entirely.

My boss did the Ferrari FXXK thing for a few years. They installed new tires on every run and at no point was a tire used twice. Those cars are over 1000 HP and capable of 215MPH on faster tracks like Daytona. Again, I strongly suspect a true 300MPH car would require the operator to install specific new tires prior to the 300 MPH runs, and discard them after the runs.

The idea that the tires could be used on a daily basis is likely to be incorrect (yes, I've been wrong before) but things like tread depth are HUGE issues on 300 MPH land speed runs. As the force placed on the tread is more than the rubber can handle. That's why they are shaved down nearly to the cord.
 
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The tires Michelin developed for the Veyron (the same tire used on the Venom and Agera) are the only tires specified for the car. It does all things, including top speed runs. They will last longer than the fuel during a top speed run by nearly a factor of two, so the tires can get you home as well.

I believe that to be Michelin's intent with these new tires, and why the development isn't a simple task.
 
Originally Posted by Jarlaxle
What do the fast cars run at Bonneville? Joe Kugel ran 300MPH in a Firebird almost 20 years ago.


It depends on the class: Bonneville LSR Records

I was there last month, and assisted some friends running their blown fuel lakester.

The fastest run on the Salt AFAIK, was the Blue Flame, which ran 622+ mph.

The biggest problem with the Bonneville Salt Flats, is that they are slowly disappearing due to mining. So the salt crust is smaller in area, and thinner. So getting a truly viable long course like was available 50 years ago, is essentially impossible at this point.

There are organizations like Save The Salt who are doing everything in their power to halt and hopefully reverse the diminishing Salt Flats. If any gearheads want to help save this historic and iconic landmark, I'd suggest contributing to the Save The Salt Foundation.
 
He's still on the list under BGALT (Blown Gas Altered Coupe) and BGC (Blown Gas Coupe)

He may have run in some other classes too, but those are the ones I saw at a quick glance.
 
I though he ran alcohol...apparently not.

I wonder if he ran a slightly larger engine for his 300MPH runs. I thought it was a NASCAR (358ci) small-block, but maybe not.
 
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