Originally Posted by SteveP
................. It's nice to see everyone plug their sponsor's tires, or the ones they sell, but I've only seen one brand that has actually addressed an important issue with getting back to rubber tires in the nitro class. 26mm tires are not wide enough to provide enough wear and traction for the rear of a nitro car. Ipanema, as far as I understand, is the only company that offers 30mm wide rubber rear tires for 1/10 touring. The wider tire is less likely to overheat and grain, and it provides extended wear and more traction than the skinny 24-26mm tires that are currently available. Here's a picture of the Ipanema 26mm front and 30mm rear rubber touring car tires.
During our association's 9 years of experience running 200mm nitro cars with rubber tires, in our "only rubber" class here in my country, we tested every brand, model, type of rubber tyre under the sun, and we finally concluded that only two tyres that worked well with nitro cars and their demands, were BSR preccapped rubber tyres, and the other was PMT Rubber tyres, both could sustain 1 hour finals without any trouble....but then we addressed the cost issue, and we finally stayed with PMT tyres as a closed spec tyre class....those tyres are til now the only thing i've seen that works with todays cars and engines.
During that process we did test 30mm rear rubber tyres made in Brasil by Alpha RC about 3 years ago, and it didn't make major diffrence. I think they still manufacture them, so Ipanema isn't the only one offering them, but they worked well over short racing heats...once warm...no good
What we found is that nitro rubber tyres manufactured with shore rating hardness, just like foams, work much better than those manufactured as temperature rated type, also that they work better when they are very low profile, so 26mm tyres work fine if they meet those criteria.
Just my 2 cents experience
BTW.....i don't sell or get any sponsorship from PMT, and I currently run the worst of them all foam class...