Seat Cover

I've found the same problem. The custom made ones fit far better but then you'll pay a whole lot more for them. Fabric is often thicker so they wear better.

I've grown fond of real sheepskin covers for their warmth and comfort as they are really thick maybe 3/4"-1" or so. They come in more colors than you can think of and can be fitted if your seats have the airbags in them (they have some Velcro blow-out seam). Drawback is they cost big dollars (mine were $450 for seats, backs, and headrests) but they also last far longer than the generic auto-parts store covers.

Advantage is they don't shed or very little. Another is they don't have a static buildup and leave clingy fabric frays all over your clothes like phony acrylic and polyester covers. Major drawback, other than cost, is that they take some time to air out as they can smell like a wet dog on a hot day. Takes some Fabreeze treatments and brushing with a metal-tipped dog hair brush to get rid of the "sheepy" smell.

Mine came from a seat cover place I found in the local phone book. They take some time to get (6 weeks for me) as the skins are from New Zealand and they are sewn and dyed back east somewhere.

Good luck.