Tyres.
The tyres on the Caddy are OLD !
They're 235x75 R15's which is great as I like meaty tyres but after checking the rim width this weekend and after doing a few calculations, I find that 235's shouldn't even be on those rims ! - 225's are the biggest and even then quite "bloated".
So, long story short, I decided I'm not running the (40 year) old tyres anymore as I don't drive particularly slow and don't want one blowing out on me.
That said, I'm not sure what rim size I'm going for long term (I'd like 17's providing I can get whitewalls to suit) so I've gone for some cheap new ones with a reasonably thick white band.
No, they're not going to be the best but I got them for just under £400 (they were on 10% off at Northants Tyres), she'll probably handle better and wallow less, I'll (hopefully) be able to fit the rears fully inflated (couldn't before) AND I'll have crack-free tyres.
I'm really quite excited as I'll treat the rims to a coat of paint and test some ideas I've been having for the "final look".