boss351

I have about 1+ day left of track use from my current set of Yoko A048's (will make 6 days), stock sizes on 996TT. I got about the same time from Toyo R888's - which I prefered in comparison, just felt a little grippier and faster to get to temp.

Now thinking about orderring MPSC's for comparison. (And eventually NT01's in bigger widths after them). Orderring from Tirerack there is the offer to have them heat-cycled and the explanation to why.. Yoko is on the recommended list, but the others aren't.

Would proper heat-cycling benefit the Toyo's/Michellins/Nitto's? For $60 getting even one extra service day out of a set of tyres would be well worth it..

NJcroc

A real heat cycling is on a track, only purchase the tire rack option if doing it yourself is not an option

boss351

If the heat cycle on track requires 24+ hours between the 1st and 2nd cycles then not an option..

Getting back on topic, does the benefit apply to all manufacturers? Specifically Michellin MPSC, Toyo R888 and NITTO NT01?

boss351

Bumping.. Is making an initial heat cycle beneficial to MPSC's, Toyo R888's or Nitto NT01's?
(Found documentation stating it is manufacture recomended for Hoosier, Kumho, Avon and Yokohama with 24-48hr cure time).

Chaos

MSPC be careful on cold days !

2BWise

Check the manufacturer's spec. Most competition tires require an initial heat cycle for tire longevity and ultimate performance, but this is not always the case especially a tire with a high treadwear rating (assuming DOT rated tires)

boss351

Thanks, things are warming up here in Texas right now.. I really liked the R888's but am wanting to compare the MPSC's.

What is the comparison consensus for MPSC, R888, A048 etc for cold/hot days??

Tirerack go along with that for tyres only intended for track use, as these are R compounds I will give the heat cycle a shot on the next set (MPSC's). After those will depend on how I like the MPSC's compared to the R888's, but if I switch back to R888's sounds like it would be worthwhile to heat cycle them also.

mdrums

boss, you can but Toyo R888's from Bob Woodman Tire and have them heat cycled.

I often wonder too if heat cycling tires for DE use and friving to an dfrom the track on Toyo R888's is even worth the heat cycling price. I too have never gotten a straight answer from a manufacture.

todinlaw

Its a good idea to HC a R compound track tire in my opinion, but I have no documentation from the MFG that the R888 "needs to be HC"

Peter Carroll/Toronto

Forget the Michelin and stay with the Toyo. Especially for DE. I've tried both and much prefer the Toyo.

1) Michelin PSCs are scary in cold weather. Toyos love cold weather.

2) Michelin PSCs do not pump water. Toyos love the water.

3) Michelin PSCs need tons of negative camber - too much for the street. Toyos prefer a lot less camber.

Heat cycling is important in racing where every little bit counts. For DE it's not that big a deal. Especially if you drive too and from the track. I have used the TireRack heat cycling and I think it's pretty close to the real thing. Certainly good enough when you don't have the option of letting them sit (off the car) for 48 hours.

Lately I'm a big proponent of keeping it simple. I stick the R888s on the car in the spring and leave them there till the fall. K.I.S.S. I leave all the swapping and screwing around to the race car.

boss351

Thanks for the input. I don't mind switching for events, after all I am bleeding brakes and switching pads also (street wheels are 19's with PS2's, track are OEM 18's). So maybe not even worth trying out the MPSC's and just going back to the R888's then.. The A048's were slow to get to heat/grip on a cold day also, but once there pretty good.

Brian P

I've run MPSC's in about 35 degree temperature with a flurry of snow coming down, and was within about 1.5 seconds of my best time.

I think the MPSC/code weather thing is a bit overdone.

brad@tirerack.com

The first time a competition tire is used is the most important. During that run, its tread compound is stretched, some of the weaker bonds between the rubber molecules will be broken (which generates some of the heat). If the tires are initially run too hard or too long, some of the stronger bonds will also be broken which will reduces the tire's grip and wear qualities. Running new tires through an easy heat cycle first, and allowing them to relax allows the rubber bonds to relink in a more uniform manner than they were originally manufactured. It actually makes them more consistent in strength and more resistant to losing their strength the next time they are used. An important heat cycling step is that after being brought up to temperature, the tires require a minimum of 24 to 48 hours to relax and reform the bonds between their rubber molecules.

http://www.tirerack.com/tires/tirete....jsp?techid=66

Please call me if you have any questions!

boss351

Will do Damon, still on the fence between reverting back to the R888's I have been very happy with and the MPSC's that I am curious to try. Doubt I would encounter the cold weather with them before they're done but the wet weather is not unlikely..

Not in a mad rush to get either set as I haven't scheduled up April/May yet for events. Might have too much going on in April..

normank

Maybe a little off topic, but where is the best place to buy Toyo R888's?