Recommended tyres for track use only

[crono]

Hi all,

Sorry to start again a thread about tyres, but the latest posts I have seen are from almos 10 years ago.

I have been able to solve all stability issues with both my 31k,s
I use one for classic races only and the other for street use (and ocasionally track use as spare race bike).
The track bike is mildly tuned, heads, flowed cilinders, reeds cages plus housing, carbon reeds, Arrow expansion pipes, internals of front forks, R6 rear shock conversion with modified valving, Triumph T595 brake calipers. The bike is fast and reliable and is keeping up very well against much bigger 4 stroke classic bikes.

I am currently using BT45's and its ok but they get very hot on track (track temperatures in Spain are high!) and although I have had no big surprises I can feel the rear starting to slide coming out of corners towards the end of sessions.
Handling is fine considering its a 35 years old bike, in long fast corners a bit of "bouncing" but that is because the front fork is not up to the job, no really strange movements at top speed, stable under hard braking. Only flaw the "stepping" a side of the rear when the tyre gets hot. Also probably because the BT45 rear is rather "flat" and it is very easy to get on the edge of tyre thread. That is why I would also be interested to get a bit more triangular tyre (raced in the 70´s with Dunlop KR 96 rear but cannot efford that now).

Running 100/90 front and 110/90 rear. Tyre pressure 2.0 cold front and rear
Thinking of going 90/90 or 100/90 front and think of 110/80 or 120/80 rear.
Don't think I need a wider rear tyre and even am afraid that this might upset handling.

Thinking of sticking to BT45's , or change to ContiClassic Attack, Avon or Heidenau.

Any recommendations for track use only appreciated

[Tobyjugs]

I can relate to your post and the fact the BT45's can get too hot and start drifting. I have experienced this twice now.

I also use tubless tyres to help keep the temperatures down. That statement will be a bit controversial.

I am now using Heideneu tyres but they haven't really been put to the test. They do feel solid and trustworthy, when used hard on normal roads. They are as you mentioned also a bit flat and squarish in profile.

If I pass some sound tests I will be using them in Folembray and Clastres weather permitting.

[mouse]

Have you tried Avon Road Rider 2's. I've only used them on the road on a standard LC but they are fantastic, in my opinion way better than the Bridgestones.

Or if they do not need to be road legal what about Avon AM22, 23's?

Mouse

[muttsnuts]

Avon AM23's are a good tyre for track use, very sticky and very stable

[abar121]

I used to have club race spec Avons on my TZR race bike.

As you mention, there are also Heideanu race tyres that seem to do really well in classic bike racing. Maybe try some of those forums.

Also interested. I have a Avon race rear AM22 on my 31k, looking for something to match it on the front.

www.tga.co.uk/products/avon-am22-110-80-vb18/

www.tyres-outlet.co.uk/product/heidenau/k65-racing/110-80--18/d-105116

[steve63]

Aug 22, 2022 21:38:24 GMT 1 abar121 said:

I used to have club race spec Avons on my TZR race bike.

As you mention, there are also Heideanu race tyres that seem to do really well in classic bike racing. Maybe try some of those forums.

Also interested. I have a Avon race rear AM22 on my 31k, looking for something to match it on the front.

www.tga.co.uk/products/avon-am22-110-80-vb18/

www.tyres-outlet.co.uk/product/heidenau/k65-racing/110-80--18/d-105116

They sound spot on but for the expense 

[Tobyjugs]

I was also thinking about the AM23's, but heard from people using them saying they could be unstable. Some of the street circuits for classic demo' s can be bumpy. That's the reason I chose the Hiedenau's.

[crogthomas]

Back in the 90's I used to use the AM22/23 combination taken off classic racing TZ's on my 31k road bike. I used the AM22 Front 110/80 and AM23 Rear 130/70 sizes which whilst not recommended for the YPVS rims, did sort-of fit (if you are willing to sacrifice the sides of the front mudguard and chainguard). I don't recall them being unstable, but then I'm no tyre tester. They were very, very grippy.

I think the soft (sprint?) compound was intended for normal (cold) weather and the medium (track?) for when it was really hot.

[abar121]

Aug 23, 2022 17:01:54 GMT 1 Tobyjugs said:

I was also thinking about the AM23's, but heard from people using them saying they could be unstable. Some of the street circuits for classic demo' s can be bumpy. That's the reason I chose the Hiedenau's.

Which Hiedenau's did you go for? How are they?

[Tobyjugs]

Aug 25, 2022 14:43:44 GMT 1 abar121 said:

Aug 23, 2022 17:01:54 GMT 1 Tobyjugs said:

I was also thinking about the AM23's, but heard from people using them saying they could be unstable. Some of the street circuits for classic demo' s can be bumpy. That's the reason I chose the Hiedenau's.

Which Hiedenau's did you go for? How are they?

I bought the K44 and K65 RSW tyres.
I've not used them in a Demo or track situation but I have no complaints the time I used on normal roads
They gave me a "confident feeling"

[abar121]

Great. Can I ask what sizes, as some of them are metric?

[Tobyjugs]

Aug 26, 2022 9:24:36 GMT 1 abar121 said:

Great. Can I ask what sizes, as some of them are metric?

The front was a 90/90 18
The rear was a 110/80 18.