👤 Step 1 — Rider & Bike Profile
💡 For accuracy: weigh yourself on bathroom scales in full riding kit while holding your bike
🔩 Step 2 — Inner Rim Width
Not sure? Remove your tyre and measure across the inside of the rim bead to bead.
The inner width (not the outer width) is what matters.
20–22mm
Narrow XC
Older/budget hardtails
Tyres: 1.9–2.2"
23–25mm
XC Race
XC race bikes, lightweight
Tyres: 2.1–2.35"
26–28mm
XC Trail
Modern XC bikes
Tyres: 2.2–2.4"
29–30mm
XC / Trail
Most common — modern XC + trail
Tyres: 2.25–2.5"
⭐ Most common
31–33mm
Trail / Enduro
Trail bikes, light enduro
Tyres: 2.35–2.6"
34–35mm
Enduro / DH
Enduro bikes and DH bikes
Tyres: 2.4–2.6"
⭐ DH sweet spot
36–38mm
Wide / eMTB
Heavy eMTB, plus bikes
Tyres: 2.5–2.8"
39mm+
Plus / Fat
Plus and fat bikes
Tyres: 2.8"+
🏔️ Step 3 — Tyre Setup
💡 Based on CushCore official data — "Most riders prefer 1–5 PSI less with inserts." Even with inserts, never go below your safe minimum PSI or you risk rim damage.
🏁 Step 4 — Riding Conditions
⚡ Max rolling speed
🔥 Max grip
BALANCED
🪨Dry Hardpack
💨Loose Over Hard
⛰️Rocky / Roots
🌿Loamy / Soft
🌧️Wet / Damp
💧Mud
💡 Dry: use calculated PSI. Wet: front drops 1–2 PSI for grip. Mud: both drop 2 PSI.
Hot weather: air expands — check and reduce slightly. Cold: air contracts — may need to top up.
