Tire size on a sunseeker?

[ThomTC]

I am really new to this. I just bought a used Sunseeker (2005). The original tires were 225 75 R16. The previous owner put on 245 75 R16. I recently had a blowout on the inside right rear. The tow people said it was because I had the wrong tire size. The current tires were replaced in 2010 and have less 4,000 miles on them.
I'm looking for pros and cons to replacing all of the tires on this RV and what is the best size?

[MikeRP]

The original size. I've been thinking about it too but different solutions have different effects. Putting a 245 on a 225 rim for duals is problematic and they may have been rubbing causing the blowout.

Also the larger size actually reduces your towing power. You go faster at a similar rpm and you lose towing power - both not good.

There are other tires and rim sizes I understand you can go to but those tires are harder to find at a truck stop if you have a blowout.

Overall I'd say stay with the original and keep them inflated properly, good tpms system, and good uv protection.

I'm curious of others answers.