Paging the racer types

Racing tyres and their road-legal derivatives: how many heat cycles would
they take before they really go off?

Some idiot didn't do his research properly and bought a pair of almost
race compound road tyres. Sportmax GP Racer D211s.

My wallet hurts.

 

Uh, that is to say, he tells me his wallet hurts.

 

Don't worry, they'll be illegal long before they've had enough heat
cycles to **** them.

 

Have these tyres already been applied to the wheels?
If not, it might be worth ebaying them and cutting your losses

 

They have. I'm going to use them; I just wanted to know whether they'll
be obviously worn out or will wear out invisibly as it were, and spit me
off.

I don't use that particular bike much on the road, so mileage isn't that
critical provided they last a couple of trackdays, or one trackday plus a
few hundred road miles.

 

If it's trackdays you want them for you've made the sensible choice. I
can't be arsed to put long lasting tyres on sports bikes but that might
be because I don't use my sports bike on motorways if I can avoid it.

The fastest I've worn out a pair of tyres on a road bike was 1,000 miles
on my old KTM 690SM and that was when I was running it in. They may have
been a bit too soft for general road use but they were great fun to ride
on.

 

I had a pair of BT-090s on my RGV. 600 miles later they were fucked.

 

Agreed. You'll get a couple of trackdays at least out of D211s. When
you've fitted them be very careful about what tyre pressures you run -
DO NOT assume the pressures in the book minus 5psi will be ok. IIRC you
have to run them extremely low, like 22psi cold rear on something like
a ZX6R. Check with someone like Holbeach Tyres cos they'll know.

--
Lozzo
Versys 650 Inter-Continental Hyperbolistic Missile , CBR600F-W racebike
in the making, TS250C, RD400F (somewhere)
BMW E46 318iSE (it's a car, not one of those 2-wheeled pieces of shite
they churn out)

 

The first set of Rennsports I put on the CBR600 lasted less than that,
but they were used mostly on track with about 100 road miles.

--
Lozzo
Versys 650 Inter-Continental Hyperbolistic Missile , CBR600F-W racebike
in the making, TS250C, RD400F (somewhere)
BMW E46 318iSE (it's a car, not one of those 2-wheeled pieces of shite
they churn out)

 

I'm liking what I'm hearing.

I've seen a figure of 23 psi hot quoted on a web forum, though I'm not
sure whether that was for the race version or the 'GP Racer' road
version. Or both. The online Dunlop catalogue I looked at only gave road
pressures.

 

I binned a set of Pirelli Diablo III's after 90 miles. They were utter shite

 

I couldn't fault the Rennsports, they suited the CBR very well but
unfortunately they are getting difficult to find nowadays in RS1 front
and RS2 rear compounds. Looks like I'll be swopping to Michelin Power
Ones cos I can buy them at silly cheap prices at meetings because we
race in the Michelin Power One Cup.

--
Lozzo
Versys 650 Inter-Continental Hyperbolistic Missile , CBR600F-W racebike
in the making, TS250C, RD400F (somewhere)
BMW E46 318iSE (it's a car, not one of those 2-wheeled pieces of shite
they churn out)

 

I had a set of Diablo Corsas on my, umm, think it was the GSXR750. Hated
them from the first second. It was the first time I really noticed a
tyre characteristic other than grip. I think they were still on it when
I traded it in, but I spent every minute in between praying for a
puncture so I'd have an excuse for getting rid of them.

Ghastly things. First time I've had Pirellis (and Metzelers are the same
tyres, iirc) since my TZR125 and probably the last.

 

No problem with the Pirellis I run on the Versys nor the Metzelers I've
run til now on the CBR. I'm taking a huge leap of faith going to
Michelins rather than buying the more common choice of Supercorsas, but
the PR2s I had performed well as do Danny's race tyres, so I'm willing
to take a chance.

--
Lozzo
Versys 650 Inter-Continental Hyperbolistic Missile , CBR600F-W racebike
in the making, TS250C, RD400F (somewhere)
BMW E46 318iSE (it's a car, not one of those 2-wheeled pieces of shite
they churn out)

 

I'll be going for PR3s on the gixer after Chimay.

 

I used to use soft Pirellis on my X-7, the softest we could claim
as road tyres in Production class. One race meeting and 3-4 weeks of riding
to work across Adelaide, then a new set for the next meeting.

--
Ivan Reid, School of Engineering & Design, _____________ CMS Collaboration,
Brunel University. Ivan.Reid@[brunel.ac.uk|cern.ch] Room 40-1-B12, CERN
GSX600F, RG250WD "You Porsche. Me pass!" DoD #484 JKLO#003, 005
WP7# 3000 LC Unit #2368 (tinlc) UKMC#00009 BOTAFOT#16 UKRMMA#7 (Hon)
KotPT -- "for stupidity above and beyond the call of duty".