I've been deliberating the same problem. until recently I've been running firestone 145s (over 100k miles in 14 years on various minors) and they are by far the best, giving excellent handling, sadly no longer available....
The only 145's that seem readily available are bridgstones which, in my experience are great on the front, giving good grip but terrible on the rear, making it very sloppy due to the flexibility of the side walls...... both the traveller and my 4 door saloon gave the same poor handling..... When investigating, people advised that the toyos were even more flexible than the bridgstones...
Recently I purchased some 155 nangkangs and these are an improvement when used on the rear, but are a bit bouncy at times when running light.
My traveller now has 145 bridgestones on the front and 155 nangkangs on the back and it sticks like glue in the wet, even with disk brakes, but is rather sloppy when loaded (in comparison to firestones)
So.... we are at the mercy of the tyre manufacturers on this one
