tyre knowledge needed

[SlowOne]

Er... I think that should read 35/37 rear...!

[mark christopher]

Originally Posted by SlowOne

Er... I think that should read 35/37 rear...!

doh, editied!!

[mro_racing aka Doorbell]

well im circuit racing I tried racing my mardave a year ago but only went a 3 times and I was running Pink Medium on the rear and found some very old mardave tyres when I first raced the car over 15 years ago and it worked very well.
thanks for the advice
just a couple more questions are the Pink Medium that same as contact tyres 35 or 37?
I would like to have the same make of tyre all round if possible but not a big deal if that's a bad idea
I would like a tyre that has little grip at high speed but have grip on the low speed and no grip roll.
is going for a shore rating of 50 is a good idea?

[LongRat]

I'm not sure anyone could be sure if pink meds are the same as anything from Contact. From my experience I'd say they are different. On my circuit Mardave I run the pink meds on the rear and Jap 52 on the front, including sidewall superglue on the front and I tend to run them as small as practical on diameter. Everything JimboJames said in his original response is on the money. I always found the Contact tyres to cause more grip roll and be more prone to chunking than the Jap/pink med tyres.

[JimboJames1972]

Pink Mediums are similar to Contact 35 in shore rating, perhaps a little softer.

However, the blend of rubber is different between the Mardave brands and Contacts. The Pinks seem to have good low speed grip (thanks to the soft shore rating) but offer a little progressive release in grip at higher speeds, probably very close to what you are after I think. It is hard to put into text but Contacts seem to give grip, grip, grip, grip and, if you really push them, they are themn prone to peeling off the rims or grip roll. Pinks give grip, grip and then gentle, progressive slide. Like LongRat says, less chance of chunking this way. At least, that I what I have also found on the various tracks I have raced on.

There is nothing specifically wrong with mixing and matching tire brands, pick what works for you.

Hope this helps,

James

[mark christopher]

I have run contact and Mardave, on my car the contacts were superior, gave a better grip through the race and no grip roll. Only time I have had chunks is if I have clipped anything.make sure there not damaged after use there fine. Nearly all the a finalists at the tamworth nationals ran contacts.as I said earlier far easier to get hold of too, if there peeling off the rim, then quiet frankly your running too soft a shore. Check the tech charts for the nats and you will see we were up to 40 shore rear and still a Max of 50 on the front.

[mro_racing aka Doorbell]

thanks for every1's advice much appreciated
think its made my mind up and im going to use UFRA Pink Med Tyre on the rear as I now they work and most other people seem to use them plus there cheap and will try Jap 50 Shore tyres and Jap 52 Shore tyres on the front

[mro_racing aka Doorbell]

right seems as I didn't have UFRA Pink Med Tyre on the car already but tried the tyres the front is spot on but the rear doesn't work as well with the UFRA Pink Med Tyre so tried the old tyres on there and was perfect so now I'm on the search for what these tyres are (I think from now on I will label up the tyres )
the tyres have a shiny wall on it on one side like the Jap 50 Shore tyres and Jap 52 Shore tyres but is softer was thinkin maybe it could a Jap Medium but not shore as I can only find Jap Medium fronts on mardaves site is this any different or is it just called that because there used on the front ? hellllppppp!!!!!