I recommend ADCO covers. I have seen them on a couple RV's and they fit perfect and I have read that Adco backs their products along with Camping World.
Also, at the top of the forum you will see a link to the Adco covers at Camping World. If you buy online, please use the link here and the Admin will get some support from Camping World for the forum.
There is an 800 number that you can call and maybe find out the length of the covers to make sure that it will fit your coach the way you want.
At the present time they are offering 4 free tire covers with the purchase. That sweetens the deal.
Ron