Ok. So we got carried away and weighed them both at each corner and we added weight (me) to the front and rear seats and recalculated the weights to work out the percentage split that the weight adds to the front and rear, then I made a spread sheet so I could plug in different weights to see how the balance would be affected.... Yes, I get carried away sometimes...
So here's the long and short of it for anyone interested.
All weights are in KG, both cars had nearly full tanks of gas onboard - 35L each (weighing 25kg)
My Hardtop is an 1800 and the Cabby is a 1600, also the Cabby has a towbar we'd estimate at another 20kg.
Front Rear Total
Hardtop: 562 327 889
Cabby: 591 393 984
The weight % splits are useful, if you want to work out what spring weight you need. So if you add eg: a 80kg driver, how much of that weight goes to each axle. etc.
Weight added to Front Seats:
51.63% adds to the Front Axle weight 48.37% adds to the Rear axle weight.
Weight added to the Rear Seats:
17.65% adds to the Front Axle weight 82.35% adds to the Rear axle weight.
Back to the original question then: Which H&R springs to choose?
For my purposes, I'm generally going to weigh under 660kg front axle and most people would weigh under 570kg rear too.
Here is an example: if I had 2 x 80kg people in the front and 1 x 80kg in the back and a full tank of gas (which is honestly the most load I'm likely to carry. Then my front axle weight would be 659kg and my rear 470kg.
Glad I worked it out now.
