We have a 1840 that has been good to us since new. We use it to clean-out our 4 chicken barns. The barns are showing their age and rain water is seeping in under the walls causeing a big mess. The last three years I ran over tire tracks, they work great but like I feared they chewed up the wheel bearing. Is there anything else I can do the want hurt the 1840? The things I was thinking about were eather lighter tracks or wider tires such as 33-15.5-16.5 but having a hard time find wheels wide enough for them in 6 lug. btw wider tire won't be a problem b/c I run a 7' bucket. thanks