why 18'' wheels more popular on track?

dP3NGU1N

Umm price and weight are the only factors that matter.

1. They're lighter (being lighter is suppose to equate to better handling)
2. Tires for 18s are cheaper

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synolimit

Lol pretty much.

And even if a 19" wheel is the same weight as an 18", it's really not. Its heavier because it has 1 more inch of outer weight adding to you're rolling resistance.

If you swing a 5lbs weight in you hand in a 1 foot circle it's pretty easy and fast rpms. Swing the same weight at your max arm extension and it can pop your shoulder out of its socket trying to go to fast.

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