whats the difference
 

hi guys

whats the difference in the goodyear gsd2 to the gsd3s
the gsd2 are nearly 40 quid cheaper

gsd2 was the older version. It was replaced by gsd3. The tread patterns are different. I think the old ones were still pretty good but you'll have problems getting replacements to match. They are probably old stock being sold off hence the cheaper price.