IMo the driving is the same. Using power and brake to quickly enter and exit the corner, should be the same on the same tracks. You pump more or less depending on what your buggy is capable of. Meaning traction and setup. My TLR 22 rotates very well with little pumping, but my b4 need more work in the 180's. The 180's is where I loose my time. For a while I was faster with the 22 in the 180's until I tuned my b4 more. Now i am faster with the b4, but I have to put a little more effort into driving it, to get it fast. The b4 is just so planted in the rear, that I constantly try to free it up, but not over do it. I know the exact feel I want. Unfortunately, the track constantly changes, so now I need to drive "around" the current traction. Normally it is pretty consistent for the heat/main, so that is why I asked about quick minor changes for the practice laps. Indoor racing is so much nicer. I can shop up for practice, tune the car and it pretty much stays that way all day. More variable on outdoor and wind is a big issue. Aside from blowing the cars in the air (not bad with buggy), it just sucks the moisture out of the track. So half way in you could now be on a dry track, where as at the start the clay was sticking to your tires. But that is the fun of offroad.


Anyway, I think the only real difference in 17.5 are the jumps. Sometimes you really need to carry the corner speed to be able to clear them.