Motocross tyres from Dunlop and Maxxis in the sizes a full size motocross bike runs: 80/100-21 on the front, 110/90-19 or 120/80-19 on the rear, and the 70/100-17 and 90/100-16 big wheel 85 sizes.
Pick the compound for the dirt. Soft to intermediate (Dunlop MX33, MX34, Maxxis MX-SI) for sand, loam and anything freshly ripped; intermediate to hard (Dunlop MX53, Maxxis MX-IH) for clay, hard pack and most Australian club tracks by the afternoon.
A motocross tyre is built for a soft track and a short life: expect 10 to 15 hours on a rear before the knobs round off. Members pay the member price on every product in the store and get free standard shipping on orders over $10. Membership is $5 for the first month.
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Soft terrain tyres have tall, widely spaced knobs that dig into loose dirt and clear mud; on hard pack they squirm and tear. Intermediate to hard tyres run shorter, closer knobs that hold on clay and hard pack. If you ride one track, match it; if you ride everywhere, an intermediate rear (MX33 or MX53 by the season) is the safe pick.
Read it off the sidewall of the tyre on the bike now, for example 80/100-21. The last number is the rim and must match; the width is a choice within what the rim allows. Full size motocross bikes run 80/100-21 front and 110/90-19 or 120/80-19 rear; enduro bikes run a 120/90-18 or 140/80-18 rear.
Around 12 to 13 psi front and rear on a motocross track, a little more on hard pack and a little less in sand. Check it cold before every ride; a motocross tyre loses a few psi a week.
Not always, but a tyre change is the cheapest moment to fit one, and a pinched or thin old tube is the usual reason a new tyre goes flat on the first ride. Heavy duty tubes for enduro, standard for motocross. Tubes are in their own category.
Members pay the member price on every tyre, under RRP across the range, and get free standard shipping on orders over $10. Membership is $5 for the first month.
Not sure what fits? Set your bike at the top of the store and every list narrows to parts with confirmed fitment, or message us with your model and year.
