warp9.9
Pocałuj mnie w dupę
Love my Avon Cobra tires. Worth every penny.
I never thought there was a debate wether car tires were better than motorcycle tires. I thought the debate was wether the car tires were good/safe enough. The force for of friction is determined by several things : the tires coefficient of friction, the force pushing down, on a horizontal plane this is the weight of bike/car(mass x acceleration due to gravity). Size of contact patch. Tread pattern has a great affect on this. Tread is there to channel water away to prevent hydroplaning. A vehicles weight is directly proportional to its instance of hydroplaning,as well as speed. The tires with the highest coefficient of friction have no tread at all, drag racing tires have a coefficient of 4 , I believe.
You can't compare a car tires and motorcycles tires coefficient of friction and determine which is better. A lot of science goes into designing these tires, it should not be ignored. A tires rating wether it is a 30,000 tire or 40,000 is calculated using the tires coefficient of friction.
So the question is are car tires good/safe enough for your driving style? It is self evident which tires are the best.
:bch:
Man! This is the best, most level headed conversation I have seen regarding this interesting issue.
Great input, TMS!
I agree with you about what the debate SHOULD be about. Honestly, I think a CT can work on big cruiser bikes just fine as long as the rider doesn't push near the handling limits of the machine. These Rockets do not handle like most big cruisers, with the possible exception of a Goldwing. Before you scream at me, they DO HANDLE well.
My only issue just my opinion here is when a few make claims that a CT is superior to the tire designed for a MC. I just don't think the physics supports that contention and I shall just disagree until I see some scientific testing proving me wrong.
I sure agree that the friction values of the respective tires are apples & oranges. The biggest component may simply be the different designs, cross sections and applications, like one is not designed to lean. BTW - Mass X acceleration is momentum (F=MA - Newton's second law) and not a factor directly bearing on friction . . . I think.
Does anyone know what is involved in determining a tires coefficient of friction rating?
Tread compound - sidewall rating - aspect ratio - ???
1olbull
Ya the Avon was a hell of a step up from the metz for me except if you get a flat on the road. the Avon will sit on the rim were I was able to run alomost 10 miles to a gas station where my buddy brought me a plug kit on the metz due to the side wall being so thick and stiff. Hell it took 4 plugs just to get the metz to hold air so I could get home the avon left me sitting 155 mile from home. Which is where I first tried a car tire. It was a lot cheaper then paying a roll back tow truck to carry me home. SO I ran the tire for about 500 miles just to be fair and decided I did not like it. Of course part of it was I chose a 240 car tire where if I would heav went narrower it might not of wallered all over the road as much. Looked pretty cool though. Anyway could not keep air in it due to having to run it at the low air pressure not really a bother as after the metz failing out in no whereville I started carrying a plug kit and a compressor. I do not have any real tight twisties so cannot say anything about them as I am not very good with either tire. I did notice that curves I could run thru above 100 mph no handed with the MC tire I now had to wrestle with on the car tire. Being 145 pounds you had to force the bike to listen to you more where a larger feller probably does not have to work as hard. tried her at higher speeds like I run where ther is no numbers on the speedo definetly did not like the feeling of the controll up there so back to MC tire I went. Now if you like the cobra I think you should try the bridy on the back which is what I have right now bridy back and cobra front they work well together and at 4500 miles on the bridy she is still round even though I now am harder on tires since I figured out how to relly do good burnouts with her and 5 psi on the boost. Either from a dead stop or if I want to by just dropping a couple gears. I do want to try the bridgy and the Michelin commander II on the front 140/75/VR17 to see if it helps me in the curves and if the tread on the michelin last longer or not. Either way I will always run the bridgy now just because of how much longer it is lasting with the Millennium Falcon. As for the front well I'll have to wait and see if I do notlike the Michelin then back to the Avon it will be. I am also going to try the 130 and 240 ZR rated tires shinko makes becaus of the W rating and LSR rules. But will always run a MC tire unless another unfortunat thing happens on the road and its cheaper to buy a throw away car tire again verse the tow truck. I am not kicking the car tire its just not for me.
and Bull thanks but I was not realy trying to do anything except point out to mully that the bridgy was so good I would try it first before the car tire. And the real thing was what he liked was more important then anyones opinion including mine. Later dude Its off to prison I go