I prefer the R1 tires myself, and as has been said, they just need to be inflated properly when using the front end loader. On my B2710, I ran 16 psi in the front tires when mowing, tilling, etc. and when I intended to lift heavy loads with the FEL, I upped them to 24 psi and never had a problem at that pressure. However, on one occasion, when I had the forks on the bucket and lifted a full 55 gallon barrel of diesel on a pallet out of the back of my pickup to set it back in the shop, I got lazy and decided not to add air to the front tires just for that one quick little job, and when I made a very sharp turn with that much load, I rolled one front tire off the rim. Of course, it wasn't a serious problem since I was near the shop door and air hose; just used the FEL to raise the front tires off the ground and aired both of them up to the proper pressure.