Lightest tire to free up some horsepower for Dyno #s

Hi Guys/Gals,

I'm looking for knowledge about tires. I'm trying to shed some rotational mass to maximize my dyno #s. I'm currently running Pilot Power 2CTS and my dyno guy said they are robbing the charts. What is the lightest tire I should be looking for? Someone told me a BattleAxe, but they couldn't tell me what series.

This tire is strictly going to be used for dyno pulls nothing more. When pulls are done, I will have my 2CTs or Pilot Pures put back on. These charts are just for documenting my mechanic's work/mods performed.

Can anybody advise me a light tire?

Thanks!

 

youre kidding??

Try airing the tire up to max pressure to find the traction limit. A few psi below will be ideal

 

Find an old one that has had burnouts done to em.

 

Thanks for the reply. Is the your kidding statement sarcasm or a genuinely meant "your kidding" It's hard to read the emotions of someone responding to a question. I'm definitely not a genius when it comes to everything performance. Just going on the words of a professional tuner.

 

Don't you think that will skew your results slightly then? The purpose of a dyno is to measure what changes in HP are achieved from a baseline and then after mods are done. Not a dick length measuring tool.

If you want to get the most HP out of dyno pull just be sure to run race gas through it during the pull, it will be good for 4-5hp if the bike is mapped for it.

then you can go back to normal pump and show everyone your dyno sheet. You could wear it like a codpiece

 

Thanks Cajun! I wanted to find a takeoff or something like that.

 

I understand what your saying... Just wanted to see what the bike could pull.... The comments on the dyno sheets would note what I used to achieve those numbers. As far as a measuring tool....doesn't really come into play for me. Everybody in my area that competes in D$#@ measuring is riding a turbo/NOS Busa or a turbo/NOS 1000. I don't want or need NOS or turbo. Stock wheelbase...I like twisties. :up:

 

I like my codpieces laminated and stored in my tail section or tank bag.

 

Michelin Power Pures..

 

Thanks VRC. I was thinking about the Pures.

 

i'd go with these. they are made of carbon and can be color matched.

 

Don't forget to move axle all the way forward and put on a shorter / lighter chain. That's some power robbing weight right there.

 

Not a good idea.... It needs to be a good thick DOT for safety reasons... I have even heard of good slicks blowing out on Dyno's due to their construction... At least that is what Charlie @ HFD1 told me....

 

I use the hell outta those Michelins. Very nice tire. Not too bad wet traction for a slick either. I imagine the dyno wheel would make a nasty flat spot on them though.

 

If you're not kidding about only being interested in the difference the mods make, then dyno your before and after with exactly the same setup. If you are doing otherwise, you're measuring something different (specifically, the mods + whatever setup change).

If you are not interested in that, just have the tuner tweak the numbers until you're happy. That's what DynoJet and SuperFlow systems do anyway :P Factory Pro is the only one that doesn't (when operated correctly) and nowadays with inflated dyno numbers being the norm, that's still useless for comparisons between not-successive runs.

 

It's not pretty when they come apart in the truck.

 

Remove the rear brake disk too. Helium in the tire.:up:

 

Remove the valve stem cap too. Every bit helps.

 

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So your saying, or he is saying that it will blow up on the dyno but not at the track? I really want to hear the explanation on this one.