I put 265/70/R17 Revo's on my 4R a couple of months ago. I did notice a
slight decrease in on-road cornering, but I think it was because I was paying very close attention to any changes in handling, road noise, etc. from the stock Dunlops. It didn't take long for me to get used to them and now they feel great to me. I can't wait until we get some significant snowfall around here to really test them out.