The Spisser Landstraße is the main route up to Samnaun. Predominantly in Austria it does come to the Swiss Border near Samnaun. On the whole the road is a joy to ride with a good surface. Samnaun is a duty free area and Petrol is cheaper than in Austria. Unfortunately some people overfill their tanks and deposit any savings they have made on the road surface under braking on the way down so you have to be aware. The attached video is as bad as I have ever seen it. Also being Duty Free and in Switzerland, Duty Free allowances apply as you enter Austria as Switzerland is not in the EU. Often the Border Crossing is unmanned but that doesn't mean you are safe as there are frequent mobile custom checks further down the mountain so don't be tempted to overdo the cigarettes.
Another Famous and spectacular alpine pass joining Switzerland to Italy.
Samnaun is a duty free area in Switzerland and the more popular, main route up is from the B180 Reschenstraße in Austria.
There is a pleasant winding mountain road from Vinadi on the 27 in Switzerland that winds its way up and joins the main route near the Swiss Border Crossing. This is not a fast road. It is narrow, with very few straights and some interesting old tunnels carved through the living rock. Most of them have tight bends inside, are very dark and motorcycle headlights tend to do little to illuminate your way. Several are also single track and you have to look across the mountain side to see if traffic is entering from the other end. First come, first served but it doesn't always work out that way. The last time I was there, October 2015, there were some major road repairs taking place and on the whole the road is looked after. This is a classic small mountain road and fun to ride.
Just before it joins the major route there is a Petrol Station where cheap fuel is available and also a Duty Free Shop and Cafe. Travel on up to Samnaun itself and you will find a typical Swiss Ski Resort with several petrol stations offering cheap fuel and many shops claiming to be duty free. You decide if they are cheap but be mindful that Switzerland is not in the EU and Duty Free Allowances apply when crossing back in to Austria. You can be checked at the border or subject to a mobile customs check travelling down the main route. 200 cigarettes over the limit attracted a €200,- fine or €100,- if you surrender the excess a couple of years back. Guess which idiot forgot the EU Status.
The B185 from Nauders in Austria to Martina literally just over the Swiss Border.
A little under 8km of nice scenery and a mixture of straights, curves and hairpins. All in all the road surface is very good. Often overlooked by travellers who continue on the B180 in Austria or the Swiss 27 in the valley below. For that reason traffic is normally light.
Experience on a drive of 35km, with numerous gentle bends, a unique high-mountain region in the heart of the largest spruce, larch and arolla pine forest in the eastern Alps.
OK thats what the leaflet says about this toll road.
Theres sections of forest that are twisty with no visibility, a couple of car parks where people wander in the roads, and cows and there mess.
But its a cracking road reaching 2042m, several cafe/restaurants, free biker safes to store you helmet.
More at http://www.nockalmstrasse.at/en/