Hum interesting topic !!!
It depend of the timeline, because they getting faster and faster..
They can go to 1 200 Km/H with ease well modfied at the Republic era (Not the old republic because it was swoop race, no pod racer race.)
You are lucky because techonoly is my favorite domain in SW universe and I'm a particular fan of pod racing, it's like F-ZERO but in so much better !!! It use diffrent capicity of a repulso vehicule...
"Tusken Raiders have beastly shots then."
They trian them self but they alway faill they never get dow a single pod racer exept in episode I and it was a feat, a great feat the tusken raider who does that was killed by Jango fett he had a prime on his head for that...
"The amount of tuskens Skywalker killed isn't even remotely comparable to Revan's."
By himself? Depend of the Kotor story if you take the light or dark side.. But KotOR I revan is sided with the light sorry !!!
The light side version is the official version.
But let's return to our pod racer.. I bet than at the empire time when circuits get bigger they could go easly at 5 000 km/H...