Here's a list of mods I made to my 2016 M3W (now sold) with observations. Take your pick wink

Fairbourne screen replaces originals - less bufetting, improves driving experience
Two eared front wheel spinners replace hex ones - cosmetic improvement and easy to use
25mm steering wheel spacer - greater leg clearance, easier steering, wheel now Q/R
Springs and proper E clips fitted to bonnet fixings - a little easier to remove/replace bonnet now
280mm fuel sender swapped in, later resistor mod. - each gave improvement but still not perfect
Track rod ends painted matt black to match rest of suspension - made a note to do this after seeing rusty ones on relatively new car
Black thumbscrews replace allen head on rear tray - much easier and quicker to remove tray without tools
Panels behind seats sealed, draught excluder and pipe insulation added - noticeable reduction in transmission noise
Sound deadening rubber added under seats and footwell - no noticeable improvement
NGK Iridium spark plug swap - perceived better starting
Xenon headlamp bulbs replace QH originals - huge improvement in night time use, white light with good dip cut-off
LED bulbs replace side lights - much lower power consumption and whiter light, use them all the time
Reversing light fitted on top of rear light cluster - wiring and switch already there so why not
Steering coupling adjusted to place wheel spokes normally at 8, 12 and 4 o/c - can now easily see tacho with probable safety gains
Rubber plug fitted in redundant bellhousing access hole - keeps the crud out
M3W lapel badge cut down and glued to steering wheel centre - neat, discreet cosmetic mod.
Rear view wing mirrors replaced with Lucas type - no blurring due to vibration but drivers side view limited
Small central rear view mirror fixed to Fairbourne screen - to correct above and give overall improvement on original
Large metal washer on oil tank cap seal - to stop rubber deteriorating (now OE)
Small stick-on elasticated side pockets added to footwell sides - useful but wish I'd fitted slightly larger
Rocker and timing covers powder coated gloss black - personal cosmetic improvement, S & S logo picked out in red
Front wheels and air cleaner cover powder coated metallic silver - wire wheels can be seen now
Excelsior Comp H front tyres fitted at same time - first impression, quicker, lighter steering
Front mudguards have yellow spats painted on leading/trailing edges - can be seen more easily, quite like the splash of colour
Fixings for above and elsewhere replaced with stainless - ongoing cosmetic no brainer given the opportunity
Passenger footwell locker - handy Christmas prezzy
Rear mudguard kit - long overdue and very necessary IMO
Nautilus twin tone air horn - much improved warning
AR stage 1 air cleaner/exhaust kit - better engine breathing and power delivery, great sound
Magnecor KV85 competition plug leads - easier starting from cold


Richard

2018 Roadster 3.7
1966 Land Rover S2a 88
2024 Royal Enfield Guerrilla 450
1945 Guzzi Airone