The tires on the El Camino are about worn out once again. I almost have the same problem buying 15 inch tires for it as I did with the 911. 235-60-15 tires.
There is a Pirelli P-600 with a tread wear of 180 that would be over a grand for 4 tires. There is a Cooper cheap tire that I have had before and they suck donkey balls in the rain even when new.
Right now I have BF Goodrich TA that are pretty good for the first half of the tread. As they get worn they get crappy in the rain. I have had several sets of them. They only last 10 to 12 thousand miles. There is no treadwear warranty from any tire dealer. I don't exactly drive the Elky hard. It can't spin the tires unless I just stand on it. That is real hard on the little 8 inch rear end, transmission and drive shaft. I just don't do it. The Elky of for hauling stuff, the 911 is for hauling ass.
I have paid under 300 bucks for 4 tires mounted and balanced in the past. Now a set of 4 is going to be just over $600.

I only paid $800 for the 911 tires that are Michelin Pilot Sports.