I believe it is a 15×8 you can go up or change rim size you would need to know the lug pattern I am not sure exactly what it is. The other thing you will need to consider is the bigger the rim the more a set of tires is going to cost you. plus you will have to run a low profile tire as well, road hazard then becomes a factor also pot holes, curbs, boat ramps, ect. so may want to think about those as well. I like the new tire and wheel packages that they offer but here in Alabama alot of county roads to boat ramps and they arent exactly trailer friendly.