How to Choose Mountain Bike Tires for Trail Riding

For trail riding, choose the tread for the ground you ride most, put the grippiest tire on the front, and pick a casing that matches how hard you hit rocks. Buy tubeless-ready tires if your rims support them. Brand matters less than those four choices.

Match tire, compound and casing to the trail

The table uses Maxxis’ own guidance, since the brand publishes clear use labels for tread, compound and casing. Other brands use different names for the same ideas.

Your trail	Compound (Maxxis)	Tread example and where it goes	Casing to start with
Dry, hard, rocky	Dual compound, “best for dry, hard conditions”	Dissector: front on 130–140 mm trail bikes, or a fast rear on 150 mm+ bikes in dry conditions	EXO+ for all-around trail riding
Mixed conditions	MaxxTerra, “best for mixed conditions”	Assegai: front, or front and rear for a surefooted feel	EXO for general trail, EXO+ for heavy-duty trail
Soft and wet	3C MaxxGrip, “best for soft, wet conditions”	Assegai up front with a faster-rolling rear	EXO+ or DoubleDown if you ride fast and rough
Steep, fast, enduro or e-bike	MaxxTerra or MaxxGrip	Front and rear, grippy tread	DoubleDown (enduro racing, e-bike use)

Sources: Maxxis Dissector II, Maxxis Assegai, Maxxis bike technology.

What the casing names mean

Maxxis describes EXO as a cut- and abrasion-resistant material added to the sidewalls, and EXO+ as its medium-duty puncture protection for all-around trail riding and lightweight e-bikes. On the Dissector page EXO+ is a 60 TPI casing with EXO sidewall protection and a small butyl bead insert. DoubleDown is the casing for enduro racing and e-bike use, with two layers of 120 TPI casing and a butyl sidewall insert. Downhill casings are designed for extreme use in all gravity applications. Heavier casings protect better against cuts and rim strikes but cost weight, so step up only when you actually damage tires.

Compound: grip against rolling speed

Maxxis calls MaxxSpeed its top-shelf rubber for XC racing and says MaxxGrip uses the stickiest, slowest-rebounding rubber it offers in a mountain bike tire. Dual compound uses two compounds within the tread for lower rolling resistance and more cornering grip, and 3C is a triple-compound configuration. Softer, slower-rebounding rubber trades rolling speed for grip, so it makes sense on the front and on wet ground.

Width and rim fit

Tire width has to suit your rim and frame. Maxxis recommends a 30–35 mm rim for the 2.4 inch Dissector and says its 2.50 inch Assegai sizes are optimized for rims with a 30–35 mm internal width. Your frame and fork limit the maximum tire; check the frame maker’s spec. The tire width guide has a calculator for that, and the tire size chart decodes sidewall markings. Curious why some trail bikes still run skinny tires? See when skinny tires work.

Tubeless and pressure

Maxxis says its Tubeless Ready (TR) tires offer better traction, lower rolling resistance and fewer flats. They need tubeless-compatible rims and liquid sealant, and the sealant must be refreshed regularly. Look for “TR” on the sidewall. Sealant choice is covered in best tubeless sealant; if the tire sags overnight, see tubeless losing air.

Pressure has no universal number because it depends on rider weight, tire, rim and trail. Stay within the minimum and maximum printed on the sidewall, and follow the rim maker’s limit if it is lower. Continental notes that tire and rim limits can differ, in which case the lower value applies (Continental). Change pressure in small steps.

FAQ

Should front and rear tires match?

They don’t have to. Maxxis suggests running the Assegai front and rear, or in front with a faster-rolling rear, and the Dissector as a front on shorter-travel trail bikes or as a fast rear on longer-travel bikes in dry conditions.

Do grippier tires change my braking?

They can, so after a switch check pads, rotors and lever feel; the brake adjustment guide covers it.