Mario & Sonic Guy
Old rivalries live on!
Sadly, there aren't very many combo options for the heavyweights if they want 4/6 acceleration. You're stuck with either the inside drifting bikes, the Biddybuggy, the Landship, and the Mr. Scooty.The point isnt that Roller tires are bad (theyre amazing) but more that combo is literally taking the least possible advantage on said stats while on top of wasting so many points isnt giving you anything fantastic. 3 Speed? 4 Accel? Sure it has some good stats in other areas, but you'd be a MILLION times better off just by switching the body to get better stats and actually make full use of those Roller stats.
You'd have to go to the middleweight category to increase your combo options for achieving 4/6 acceleration, and as such, this will take a topple on the speed stat.
Anyway, one way or another, you are more than likely going to end up having acceleration points that are wasted, especially if you prefer to use the inside drifting bikes a lot.
Sometimes I just wonder why the acceleration tier system came back, because it's just completely stupid to see 4.75 accelerate at the same rate as 4, when there should clearly be a difference between the two values. But knowing Nintendo, this will likely never be fixed up.