Maybe. Some 160s work and some are a very bad idea. As far as improved performance is concerned, it is definitely a bad idea. I have a 160/60-17 Michelin Pilot road on the back because it was the only road tire available that would fit when I stopped in New Mexico and needed a tire. There are 3/4" to 1" chicken strips because the outside edge tread portion is pretty much parallel to the mid line of the bike. It's turning in great touring mileage but is vague at hard lean angles.
I don't know of any 160 that recommends a rim width less than 4½, it would be pinched on a v-strom rim and not have the same handling characteristics as it would on a 4½ or 5" rim that they are designed for
Yes, the larger the number, the wider the tire; but that tire has to be matched to the proper width wheel for it to work properly. The same tire on a 4" wheel will look (and handle) completely different than on a 5" wheel. Bigger isn't always better, and this is one example of that. If you managed to fit a matching wheel under the rear of the Strom, then you could try the wider tire and expect a handling increase. But sticking a 160 tire on the stock wheel will make it handle worse than a 150 tire.
150 = width of the tire carcass in millimeters
70 = aspect ratio; height of the tire from bead to tread as a percentage of the width; 70%
R = radial
17 = wheel diameter in inches
M/C = motorcycle
69 = load index = 716 pounds at the max allowable inflation pressure
V = speed rating; V = max 149 mph
don't know about you boys but I'm running a 170 Roadsmart on my wee with the stock WHEEL (not rim, bicycles and dirt bikes with spokes have rims) and it handles just as good as a 150 or 160. If you think the wee should handle like an R6 or ZX6 you're crazy. I get around 58 mpg, I know my limits and my bike's limits and feel very comfortable with that tire. The Roadsmart has great wearability and I'll gladly get another when this one wears out, but what do I know.
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