Aerobatic pilot reported a blown tire on landing after brake application. Pilot reported that high local temperatures and pedal forces for type of plane may have been contributory.

Narrative

Blown tire on landing. The temperature was over 110F; and on landing; after braking; the left main gear tire deflated. Inspection of the wheel and tire leads me to believe that I had just locked up the wheel inadvertently. It is characteristic of the brakes on this airplane that they are not very effective; as the plane was designed to be operated from grass strips; at least so I have been told by pilots where the airplane is very popular. It takes great foot-pedal effort to get the wheels to lock. I had been suffering pain in my left foot; not severe; but noticeable. Because of this I probably pushed harder than I normally would. I did not consider myself unsafe to fly; and indeed I had just conducted a flyover; under trying conditions: extreme high temperatures; turbulence; traffic from other participants in the flyover. But perhaps I should not have flown that mission; knowing I was not perfect. I will be more perspicacious if the situation ever comes up again. Fortunately; the only damage was to the blown tire. I think the heat had something to do with the incident--the very next plane to land; a twin-jet; also blew a tire!