Rear Springs

[Neil P]

My car has 200lb springs on the back at the minute. Being something of a fat lad, It's too soft on bumps, regularly bottoms out and adopts an oversteering attitude very quickly (you can feel it as soon as you turn in).

I've seen a couple of threads on here about 250lb springs. Do they sort it out adequately? The front has 350lb springs fitted which seem to work quite well. I don't want to over spring the rear end but on the other hand I don't want to be buying numerous sets of springs to experiment with if I find I need stiffer ones.

Shared experience welcomed, please.

Neil