I don't know anything about the Sirac's, because I run Tourance's(OEM). At 18.000km got them replaced with new Tourance's, although the old ones were not completely shot. At first I'd change to TKC's(mostly too for my allroad trip to the Ukraine, which failed), but the short mileage(about 6.000km), made me change my mind and go for the Tourance's once again. I'm happy with them, for me good handling in dry and wet weather and good mileage. So to keep this beautiful hobby affordable, I'll stick to the Tourance's, more so I only occasionally do offroad ridin', mostly gravel roads(farmroads and such).
Greetz, Hans.

Update - My SIRACs are slowly giving up the ghost (1.5mm left)

Spent ages trawling the forums for a 50/50 tyre that can take the commute miles and be decent off-road.

Result - Heidenau K60. Everyone seems to love them, off road capability allegedly equal to TKCs and they last 7,000+ miles:

http://www.graficoetico.it/adv/heidenau_k60_2.jpg

Ordered a pair from www.moto-tyres.co.uk for �105 including postage.

Will try to stick them on maybe this week-end or next. My first tubed tyre change, so I'm expecting a struggle :120:

Hope the off road ability of the K60's isn't the same as TKC's - I have the K60's fitted to my ten at the moment and am in the process of swapping them out for a better off road tyre. The K60's were OK but on wet grass they spin up too easily and in mud they just weren't up to the task.

I was pondering either TKC80's or the Trelleborg Army Specials for better off road riding, if the TKC's are the same as K60's it looks like I will be looking at the Army Specials in more detail.

Kieth, if you want grip in muddy conditions etc the swiss army is the way to go. Just be very careful on the road untill you scrub them in. I had them on my DRZ 400 and used the for road, greenlaning and Hare and hound 3 hour Races. And that is what I will be fitting to my Tenere after Xmas.

How scary are these on road? I have looked at these and there seem to be quite a few followers. I understand that they are knobblies and as such they should be treated that way but . . .

Thanks:hcrap:

I can see why the K60's might have longer road wear, but I can't see why they would be comparable with the Twinduro's off-road. It has to be said mind you that off-road covers a huge range of surfaces. Here in the North I don't think they'd have the capacity to clear the mud and peat away fast enough. although they do have more aggresive pattern than the Tourances, so I guess they will have some advantage there.

It might be as well to state what kind of surface you ride , rather than just 'off-road' The Tourances are superb on fast gravel fire roads, but diabolical on anything wet or slipery. The Twinduro's are a good all round tyre but have a short life, as you would expect. It's all about balance, I'd rather have a tyre that has better off-road manners (mud, rocks, slurpywetgrassymudlikestuff) and take it easy on the tarmac - that doesn't mean I'm right, just that I know what my prefference is.

I have noticed an interesting change in the ability of the Twinduro's since upgrading the fork springs, no more of that funny low speed wobble you get, and they feel much more grippy, which leads me to ask, if it's just the suspension feedback that is causing such a difference of opinion on the tyres ?? It'll be interesting to see if there is any change in the wear on these too.

Siracs comparing to my other tyres
 

I have Sirac on my XTZ. Now it has 4500km. Front is ok (3mm evenly on the tread), but rear is squared (2-3mm in the center and 6-8on the edges). Due to square rear tyre the bike is falling into the curves, so I will change the rear for the next season. I had Michelin T66, Mitas E07, Mitas E08 on my XT600E, Metzeler Tourance and Mitas E08 on my XTR, Bridgestone TW41 and TW42, TKC80 and Mitas E09 Dakar on my DR400S and now the Siracs on XTZ. TKC80 was the best compromise toward to off-road, but with low milage (4000km) of the rear. I was using DRZ with TKC in the winter on road and they were surprisingly good on tarmac too, but in summer you can see like the rear tyre knobby are quickly going away on tarmac! The balanced compromise on-off were E07 (low price, lower milage, quickly squared rear and toothlike front). The best compromise toward to on-road are surely Sirac, but low milage of the rear. Tourance were good on road (only danger on white road marking by wet), but disaster off-road, milage high - 8000km rear and 15000km front. Similar, but not as good on-road were E08. E09 were better than TKC80 by off-road, but more noisy and vibrating on-road. Now I will try rear E08 with front older Sirac.

Used a TKC on my Transalp front and rear did over 4000 miles on the rear and it was pretty cooked but great tire for road and most off road, cant grumble at that mileage either for a knobbled tire. The front TKC is pony in the dirt mind and sometimes a mix and match works. A friend used a T63 front with a mitas rear on his Africa twin for our summer trip to the pyrenees and after 2000 miles it still looked good on the front even with the heavy weight of a twin on it. The majority of front wear comes from heavy breaking into the twistys, just try not to front break:icon_smile:

Keep clear off the Bridgestone TrailWing.
My V-strom didn't grip at all on hard/soft sand or even on grass.

The tires are not that convincing in the rain either.

what about these....Heidenau K60`s anyone tried them out,,, ????