“The EPA estimates for a 1988 K5 Blazer are 11 city/16 highway with a combined average of 13.”
This is what I found for an 88 Blazer 350 fuel economy.
Also, seeing 235/75R/15 as factory tire size. Unless, you opted for the 215/75R/15’s.
Not trying to be a d*nk, but all I see is hundreds of letters. It literally hurts my brain to try and read these posts.
https://www.gmt400.com/threads/runonsentences.64242/
I didn’t use those, that was for OP, as that’s the color he painted his wheels. I did recently paint mine and just bolted them up. I don’t ever plan on unbolting them.