Avon Roadrunners?

[Motu]

TT100/K70 are `vintage' tyres for things like A65s and T120s, right? Surely they didn't have 4.10 fronts. Is 3.00 particularly uncommon? What do the Goldies/Velo Thruxtons run at the classic racing if not slicks?

They say the TT100 takes advantage of modern technolgy - more modern fabrics and construction methods,and certainly compound.They don't say it for the K70,but they grip a 100 times better than they did back in the day,and that's just the standard compound.The 4.10 was supposed to be a repacement for the 4.00.....but now they say the 4.25 is the 4.00 replacement.3.25 was the most common front tyre.....3.50 was often OE,but 3.25 used.

Race compound is available in many ''old'' tyres - TT100,K70...even the old ribbed Avon Speedmaster MkII.

[xwhatsit]

Hey! So much for Dunlop's website. Here's this from Cycletreads:

300-18 TT100GPA RACE CLOSEOUT No 140.25 140.25

Unfortunately, not available. A race compound 3.00 18 TT100

However, they do have a 90/90 race TT100 $165 though, pretty expensive for a front tyre in my book But a 4.10 normal (?) compound rear at only $128. So hopefully they'll still be around in a month or two when I need new tyres. So I wonder if this is leftover stock because these sizes aren't on Dunlop's website.

90/90 is a rear tyre, oddly enough. Fit it to the front? There's another thread in itself

Now I'm going to ring around and try and find a 3.00 18" TT100.

[malcy25]

Hre's the specs with effective sectional width and rolling dia for comparitive purposes.

http://ridersnavi.com/catalogue/tyre/TT100GP/index.html

The 90/90 about 1cm wider and a few mm taller than the 3.00.

They are a very good tyre and have seen a number of guys race very effectively on the TT100GP's over the years (this century). Also note they are both front and rear fitment. There are no specific fronts or rears.

The biggest issue being availability.

Limited demand causes supply problems. Good tyres are available, just end up paying more and sometimes having to think ahead due to delivery times.

[Bonez]

xwhatsit another option is cheng shin barracudas. Had two 90/90s on the front of the GB now. They have a matching rear as well but I generally run the harder Hi Max on the back of mine.