i'd say from personal experience depends on your driving position. i've got some puma race boots for when i'm out in my kit car as i can't wear normal size 12 trainers without standing on at least 2 pedals at a time due to them being so close together and the boots are fine as my legs are pretty much straight out, but in my cossie i can't get on with them and the only thing i can put it down to is in the cossie my leg is at more of a angel due to not being sat only an inch off the floor!