Depends on how much squeeze you're experiencing. I'm sure you know that a helmet should be snug, but not give you a headache or feel like your head is being pinched like a zit. But too big won't protect you like it should. I would first check to make sure the helmet is the correct shape for your head. Many riders chose a helmet based on the graphics. If you haven't done so already, go to a local shop(s) and try on various helmets to see which one fits best. I used to wear Shoei, but found them noisy and not a good fit for my head. I find The Arai RX-Q to be a good fit for my head. It's the most important piece of equipment you have, make sure it's going to do it's job.