Hi Alfa, I race an MX5 too. Steel towing eye are fine, loop diameter must be 80mm to accept any kind of strap. I use the front one, bolted to the cross member, to put my car on the trailer using the manual winch with no issue. Never tested the rear one so far. Its better to help the rescue to tow the car parallel and wheels straight… I prefer the steel towing eye than a strap, matter of taste.
Mine look like this:
https://www.demon-tweeks.com/uk/spar...-eyes-7000216/