I am sure that the rubber compound is different depending on the tyre maker.
I have two Cessna 152,s and one PA-28 and the main wheel tyre is the same fitted to both types of aircraft.
When I started leaseing aircraft I fitted the cheapest tyres that I could find, this was a mistake as the cheap tyres were being changed at each 50 hour check. After testing a range of tyres it was found that the Goodyear tyres lasted the longest being fully worn out and usualy just making the 200 hour mark, but occasionaly falling a little short of 200 hours.
Condor tyres would make 150 hours each time but no more.
The cost of the Condor tyre (just under twice that of the cheap tyre) and the fact that the time to change it was at a very predictable maintenance check made it the best value for money for my company.
The Goodyear is the best tyre from a technical point of veiw but the extra cost of the tyre and the cost of downtime when having to change a tyre between maintenance checks exceeds the value of the longer life of the tyre.
Both the Cessna's are doing a lot of landings as they are my basic trainers, the PA28 weighs more and so I would expect less life from them, this is in fact the case the tyres fitted to the PA28 still last about 150 hours but the landings are about 25% less than the Cessna's
This is a very long way of saying that the rubber used is different between manufacturers, most of the landings are on the same runway so the only vairiable is the rubber compound of the tyres.