Shreq. A mid life crisis

[Gerrit Loubser]

... the speedo reads fast, about 10%.

On most cars the speedo is a little optimistic, often to the tune of 10% or so, but tyre size does directly affect this of course. What size tyres are currently on your Troll? You might find that you have 245/70R16s or something instead of the standard 265/70R16s or 275/70R16s. Shreq does look a little long and low in the piccies .

I can tell you that my speedo is just about spot on with 285/75R16s fitted.

Also do a bit of a check of the odometer accuracy (ideally against a GPS). You might find that the odometer is rather less optimistic than the speedo, so bear that in mind once you have fitted bigger tyres when calculating fuel consumption (and service intervals, I suppose).

I also suspect I have a rear locker diff due to the “shudder” on tight corners on tar.

You should be able to figure this one out by lifting one of the rear wheels off the ground and supporting the axle on a trestle (remember to chock the wheels that remain on the ground so that the vehicle can not roll). Place the transmission in neutral, release the park brake and crawl under the vehicle. Now try to rotate the rear propshaft by hand. If you have an autolocker in there, it will lock up and you won't be able to rotate the propshaft once the play has been taken up.