Signal to Noise	Mercedes-Benz Specs	Coupes	Convertibles	Sedans	Miscellanea

How to measure one's head for a helmet:

Any time you're spending time on a track, you should be wearing a helmet. Since it's where they buy everything else, a number of people will buy helmet on the Internet. This means, a first time buyer may not have a salesperson to assist them in the most important aspect of buying a helmet - the fit.

The circumference of the head should be measured approximately one inch above the eyebrows in front, and at whatever point in the back of the head that results in the largest possible measurement. Take several measurements to make sure you have the largest one. If you buy a helmet that's too small, you'll probably get a headache. For me, a helmet headache may cause lapses in attention. This results in slower lap times at best. A helmet that's too big will be loose and can be tipped back. If the helmet is in that position during a crash, it may not protect the frontal brain lobe

Basic helmet Size chart (your retailer will have their own)

Helmets should fit down on top of the head. There should not be a gap between the helmet and the person's head. The front of the helmet should lay just above the eyebrows. If the helmet pivots on top of the head, that means it's too small. If the front of the helmet comes down over the eyebrows, that means the helmet is too large.

The chinstrap should have a snug fit under the chin. If it is too tight, you'll be uncomfortable. If it's too loose, the helmet may slip during in an accident, which would reduce it's level of protection.

Lastly, I typically try on a helmet and wear it for a half-hour before deciding it fits. That's because a helmet can feel like it fits, only to give me a headache after some period of time. That usually occurs when it's a little too tight.