Five steering wheels that suit a Citroen Saxo, the boss kits that actually fit it, and the thing most people get wrong: not which brand, but which diameter, and how much a smaller wheel changes the steering weight.

Five steering wheels that suit a Citroen Saxo, the boss kits that actually fit it, and the thing most people get wrong: not which brand, but which diameter, and how much a smaller wheel changes the steering weight.

Five steering wheels that suit a Honda Civic EP3, the two boss kits listed for the car by year, and why on this one dish matters more than diameter. Drawn to scale.

Which boss kit fits a Land Rover Defender, five steering wheels that suit it, and the check that actually decides the part: count the splines on the column, not the years on the V5.

The Mk3 is the one MX-5 that does not take the MOMO hub every other MX-5 uses. Which boss kit actually fits, five steering wheels worth having, and where the changeover falls, drawn to scale.

One MOMO hub covers every MX-5 from 1989 to 2005, so the Mk1 and the Mk2 share this guide. Which boss kit fits, five steering wheels worth having, and how much smaller you can sensibly go. Drawn to scale.