Tire Clearance to Undercarriage

[AlaskaJeff]

Hi folks, my 2012 Cougar Xlite 26SAB has about four to five inches of clearance from the tires to the undercarriage on the non-slideout side. I bought the 5th wheel used and after my first trip, for some reason, I looked at the undercarriage and both tires on that side had rubbed. The damage was slight and basically rubbed off the fabric. I'd like a little more clearance so I don't have any issues and am wondering the best course of action, if any. I'm wondering if this clearance amount is normal or if it is definitely not enough. Perhaps I, or the previous owner, hit a bad bump too fast?

Has anybody had any experience with this? Is it something to worry about or could it be an anomaly?

I've tried to find a similar 5th wheel to mine, same year and model, to compare but I haven't been able to find one nearby.

Thanks for your help.

Jeff