Drilled help the cooling process. I do drive pretty hard, so I think the drilled are a good fit for my style. I just went through a front set of Continental WS06 55k tires and they had 3/8 of tread left on the front ones that I had to make a claim with Continental to replace the two. I had only put about 17k Miles on the tires and they were worn down to close to replacement level. The mechanic I talked to said the drilled were probably the right choice with my driving style. Im the guy out there passing you on the highways doing a 130 regularly. Luckily my Uniden R4 works amazing to capture all the KA bands and cops. I haven't gotten a ticket for speeding in well over 2 years and I am speeding a lot. Best money spent.