Just ordered 4 new Super Sports for my stock 08 vert with 4800 miles. As it gets colder up here in MD, my 6 year old PS2'S are a little slippery. My PS2'S are oem and only have 4800 total miles on them. Are they worth anything? They stick in warm weather great, just don't want to spin out in the cool weather up here. Any suggestions? Thanks.