Will 31x10 r15 tires fit on a 93 blazerS10 4 x 4?

Yes, 31x10.50 R15 tires can fit on a 1993 Chevrolet S-10 Blazer 4x4, but it may require some modifications. Depending on the suspension setup and current lift of the vehicle, you might need to trim the fenders or adjust the suspension to prevent rubbing. It's always best to check with a tire professional to ensure compatibility.