Eyelids. They are the most ridiculous mod anyone ever invented, right up there with the 'bad boy' bonnets. It's stick-on plastic tat.
Sticking with lights, tinting film. Why you would want to make your car harder to see (and as such, easier for others to drive into) is beyond me.
Sticking with tinting, tints on glass. Why you would want to make it harder for you to see (and as such, easier for you to crash into things) is also beyond me.
Cars with £20,000 worth of ICE. It's a car, not a soundstage: Spending a fortune only goes so far towards good quality audio when you're sitting in a tin can.
Mahoosive wheels with rubber band tyres. Congrats, you just make your car heavier AND the ride atrocious!
Cuddly toys. The one exception is LM time, when any ol' tat goes in the name of irony and humour.
Numberplates that are badly spaced or silly fonts or too small. Either stay legal or just remove the bloody thing. Less penalties for the latter, too.
Rat look. No, it's not cool, IT'S F*CKING RUSTY AND ABOUT TO FALL APART. Man invented Hammerite for a reason.
Super-stretched tyres on wheels/slammed cars. Every time your wheel arches rub or you bottom out driving over a ladybird, God kills a kitten.
Any stickers or emblems purchased from Halfrauds. You do not have a Type R GTi Sport RS, get f*cked.
Tuner stickers on a car that contains no tuning bits. No Nismo exhaust or bodykit? Take the f*cking sticker off then you pillock.
That'll do for now. My blood pressure is rising just thinking about it.