Well, I have tried and tested the Pirellis on the ef, and it was stock standard at the time, on lpg and I beat an XR6 turbo manual, and a 12 second nissan silvia around the skidpan at gympie by 3 seconds.

The xr6 turbo had 17 inch factory fitted items with plenty of tread,
my pirellis were on the wear bars just across the middle but there was a bit of tread on the edges, and yeah I beat the xr

1.07 was my time and 1.10 was the xr turbos time
but its all about your budget. can you afford 200 a corner tyre or more?

Also, has anyone ever driven on Good year grand rally S (standing for s**t)

also available with the same tread pattern - Remmington LOL

those tyres should never have passed australian standards testing, worst heap of garbage I have ever driven on!

Yeah, I remember those, they were std fittment on XE falcs.
The ol'man had them on his XD, and when he got rid of it in 94, it still had the original spare, a Dunlop ER78. Brand new, never used. He bought the XD in 82. Was a 250, 4sp Spack sedan in Venus orange.( an in your face orange). It was in mint condition when he got rid of it, still had the factory windscreen in it.

Anyway, back to tyres, how about the ol Firestone Wide Oval's???
The older guys would remember them, hard as nails, only gripped on a stinkin hot day, and skated all over the road in the wet. Same went for the the Kelly Charger's, the ones with the fine tread pattern, absolute sh!te.