[Rehaan]

What kind of additional weight are we talking about for "laden" weight?

I assume it's something like 4 passengers @ 65 kg / person or something like that?

[narendra.vw]

My observation,
The GC changes drastically having all four individual suspension with respect to weight added.
In particular having coil springs.

The GC of rigid Diff with leaf spring remains almost the same.

[kbishwa]

Originally Posted by Rehaan

What kind of additional weight are we talking about for "laden" weight?

I assume it's something like 4 passengers @ 65 kg / person or something like that?

Every manufacturer needs to provide Type Approval Certificates to the competent Government authorities. In that certificate Gross Vehicle Weight is mentioned against a given model. So, no need of anyassumption. One example is attached below for Tata Hexa Gross Vehicle Weight (GVW) herewith.

Thanks,

[FarPatel]

Originally Posted by volkman10

ARAI spells out the new ground clearance norms. Measurements will now be taken with a fully laden vehicle, as against the earlier condition of an unladen vehicle.

I believe that the lowermost components of most cars are the bottom supports of the rear shocks and these would normally lie outside the 80% boundaries specified by ARAI. So my logical mind would say that the absolute lowermost points should be considered, since these would be more liable to be damaged by stray rocks etc. rather than other, higher placed parts. The ARAI specs may be useful when considering the ability of the vehicle to cross speedbreakers without scraping the underbody but not when you suddenly come across a concrete block in your path, left behind by an improperly cleared construction activity.
I know, it happened to me.