I'm going to replace my tires for some land speed work.
The question is
Do I get the Diablo Supercorsa SP V2 which are the lightest and stickiest tires (accelerates quicker)
or
some Touring tires which are heavy and hard. (with maybe less rolling resistance)

What's everyone's thought on this for the most top speed?

Hello, dunlop corporate... I'm going to do some land speed work and what tire would perform best in your lineup?
Hello, metz... I need to know if your lightest z rated tire will do the trick I'm looking for, btw, how much does that tire weigh?
Hello, bstone... Really? For free? How many do I need?
Hello, crapshoot... I'm not going to ask for sponsorship, I'm going to play it this way and if no bites from any manu, at least I know their weights and z ratings I'm comfortable with.

Or I bring me a digital scale, head to the local bike shops, wight the z rated tires and go from there.

Hub I like your advice but I'm going in September.
I don't think they would respond before then.
I got my tire weights from this article.

http://www.motorcycle-usa.com/2015/02/article/2015-sport-motorcycle-tire-shootout-conclusion/

* Last updated by: capt10ed on 8/8/2015 @ 9:41 PM *

what i'm trying to decide is which tire might be faster.
I think I'm going to go with the lightest stickiest tire with 50 lbs of air.
Lightest will accelerate fastest
Stickiest because it will slip less with the high pressure.

Don't confuse the losses seen on dynos from sticky tires like the Shinko for real world losses. Dyno drums are knurled and in no way mimic true road contact. The Hook-Up does however have a very flat contact patch so you'd have to see how much you could get it to arch under high pressure. Food for thought.

Mav I'm thinking the sticky Diablo will allow me to run a higher tire pressure but not slip while accelerating hard.
Last year with the Bridgestones S20 I ran them at 35 lbs. because it was so cold and was concerned about the slippage.
Do you think 50 is too much?

I know you circulate on some other forums.

What are the other racers saying?

I've no empirical evidence but I'd lean towards the tire with the least mass since it will (should) deform the least under cetrifugal force.

To me, that's what spells the most traction: contact patch maintained by a stable carcass at high rotational speeds.

Not much is being discussed
mostly the safety of 186 mile per hour tire going over 200.
I agree that's one reason i was thinking about the heavier touring tire.
since the tire is designed to handle the weight of cruising bikes typically weighing 200, 300lbs or more.
and with the added weight and the added centripetal force since it's going for a mile and a half.
This would help the engine gain those last few revs.
translating to 1 mph!!!!!
Maybe
But the lighter sticker and with more tire pressure might deform less and still be able to accelerate hard without spinning.

If I were to follow the Hubbish (who understands that shit, anyway?) I'd call and perhaps try to determine who's using the most nylon/aramid fiber and the least steel, outside of the bead.

That combo "should" provide the least rotating mass AND the least distortion at maximum rotational speed.

Could possibly be a 3 way between Michelin, Pirelli, and Avon. They all have deep racing pedigrees.

* Last updated by: hagrid on 8/10/2015 @ 7:24 PM *

"Could possibly be a 3 way between Michelin, Pirelli, and Avon."..now I REALLY need my Danish;)

I agree that's one reason i was thinking about the heavier touring tire.

Rubbishit just mentioned "Z" as a rating in hubbeer land. I do not run a heavy touring tire rated for 160mph. I run a designed for 200 plus and can be sustain there for so many minutes is my rating. I do not listen to the net, I run as fast to the tire manu's website and look for the highest rating for high speed work.

I then find said tire on the dealer's inventory is one dealer. I keep finding other tires to weigh at other dealers and their inventory for that model, etc. Unless the specs are on line and the manu has that listed.

where are you running?
What speed are you looking for?
How much HP do you have?

* Last updated by: redboot on 8/11/2015 @ 12:10 AM *

I'll be running in Loring Maine in Sept 4 and 5
I'm hoping to go 210+ this year
Last year we topped out at 208.1
So I'm not looking much.
I was thinking outside the box regarding the touring tires with their stiffer sidewalls and heavier weight.
Changes this year are aero, frictional losses and running MR12. Last year 208 was done on Sunoco regular....
I also decided to run the Pirelli Diablo Supercorsa SP V2 because of their lighter weight.
As for HP, Last year just before I went it dynoed 195sae guess you would call it a conservative dyno. I really wanted to check A/F to make sure it's not to lean.

* Last updated by: capt10ed on 8/11/2015 @ 7:01 AM *

First off, congrats on 208 mph, that's impressive. Previous posts have already cleared up the tire rating but you already knew that, I think you are just looking for any additional input/ideas. As this is LSR you do not need big fat tires as they will only create drag. You should investigate which is the narrowest tire that you can safely fit to your rims, back and front, maybe even a drag racing tire to the front. The thinner the tire the less the drag the more MPH to you. To take this to the next level you could actually shave your back tire. Shaving the tire will not compromise the integrity of the tire but will remove all that excess rubber that is expanding at 200 mph and stealing your HP. If it is shaved it also gives you an opportunity to change the profile by cutting the centre of the tire flat so that you have a good contact patch. I would not run any less than 50psi and would not worry about wheel spin, although that been said, I don't know what distance you have for a run up to the timed mile so don't know how hard you have to be on the gas. If you only have 1 mile run up then obviously traction is an issue, any more than a mile and it should not be a problem. By the same token I don't know what the slow down distance is either. If you have lots of room to slow down then loose all your front brakes (if the rules will allow) as this will save you a lot of weight and drag.
Good luck and keep us posted on your LSR endeavours.

Red Thanks I did select the Pirelli not only for it's lightness but also because of the front tires narrowness. There were a couple of tires which narrower but the were from inexpensive (read cheap) manufacturer which I wasn't comfortable buying.
As for the track IT'S GREAT!!! They time you at the mile and the mile and a half. Then you have a mile to stop.
The rules require front and rear brakes. I am considering dropping 1 of the front rotors though. I hear what you saying about shaving the tires but I'm not willing to do that.

Ha Ha, I've just googled Loring Maine, you'd best keep them two front brakes!!!

There are some VERY FAST cars and bikes racing there,
I'm only going 200.....:)