Not had a Karoo front but the rear is no better than a TKC off road. On road the Karoo is slightly stickier but I only managed to get about 2500 miles out of of one on the rear of my 990 katoom. TKC's last a good bit longer than that (4-5000ish)
On a car you need to have all the tyres the same maker.
What's the deal on a bike ?
My F800 has a good, original Battlewing on the front and I want to put a tourance on the back. Is that ok to do ?

Do you?![]()
Mind you, the Tourance is not one of the best for the 800!

Mind you, the Tourance is not one of the best for the 800!
On a car you need to have all the tyres the same maker.
What's the deal on a bike ?
Two times I've needed to change tyres, each bike needed two at the same time.
My F800 has a good, original Battlewing on the front and I want to put a tourance on the back. Is that ok to do ?
No you don't, they need to be the same construction, so you can't mix radial and crossply tyres on the same axel, or have radial front/crossply rear, or have different aspect ratio's
But they can be all from different manufacturers![]()

An interesting comment V8legend. Can you share the context in which you make it?
By way of scene setting I had Tourance on my wee F650 single for a number of years.
Cheers