Aftemarket wheels and tires for roadracing

[pwpanas]

Originally Posted by JPDsupra

thanx but i know the thing about width and traction and how skinny tires can make you slow but i was just wonderin what were the most lightweigt rims

Fwiw, I've heard that magnesium wheels are among the lightest, although generally not ideal for street use. Apparently the magnesium alloy, although very light, also tends to be brittle and will (for example) break/crack rather than bend if you hit a pothole too hard.
http://www.buywheelstoday.com/images_products/1279.jpg

Unfortunately, I doubt that these Enkei magnesium rims (or any ultra-light magnesium rims) are available in the correct width/offset combo for the jza80 chassis.

Update: I've heard that Forgeline and iForged also have ultralightweight magnesium rims. Since I know Forgeline does make an 11.5" wide rim, this might be an optimal choice for overall performance (if their magnesium alloy rim is available in that width).