Have a technician who knows RV’s thoroughly inspect it. Then if you still want it make a substantially lower counter offer to buy it as is and shown without a warranty. Use the money you’ve saved to have the rodent damage (as well as other issues) fixed properly by someone you trust.
BTW so far you’ve been getting good advice regarding the tires. No matter how good the tires look they can be bad just due to age. Inspect the tires with a magnifying glass where they bulge at the bottom when sitting. You’ll see tiny cracks in the in the old tired out rubber. Both engine and transmission seals go bad as well due to age, that includes the seals on the ends of the crankshaft as well as seals around your engines valve stems.
Steve
