Are FIA bucket seats 6 point harness compatible? What a 6 point seat needs, what FIA 8855-1999 actually requires, and where the hidden crotch strap slots are on steel framed and fibreglass seats.

Are FIA bucket seats 6 point harness compatible? What a 6 point seat needs, what FIA 8855-1999 actually requires, and where the hidden crotch strap slots are on steel framed and fibreglass seats.

Can you use an ISOFIX child seat on an aftermarket bucket seat or sport recliner? Why aftermarket seats have no ISOFIX, why buckets and child seats do not mix, and what we advise instead.

The widest bucket seats that fit a Mini R50, R53 or R56: the 600mm shoulder and 500mm base guide, the Sprint L and TRS-E XL, a customer’s Evo L build, and the frames that suit.

A guide to bucket seat trims: 3D mesh, velour, Alcantara and suede, leather and vinyl, with how each one wears, breathes and lasts, and which suits your car.

Which reclining sport seats fit low roof cars like the Toyota MR2 Mk3 and Celica: the 90cm height rule, our four picks with their dimensions, and how they mount.