Crawler Tire Tool
Crawler Tire Tool
How to: ① Pick a rim size, and a class chip if you are shopping to a rulebook.
Class chips are ceilings — "C2 legal" shows every tire at or under 4.75″, including the shorter ones.
② Search brand or model. ③ Click a tire for the full card.
④ Compare: open a tire → Lock as Tire A, open another → Lock as Tire B, or type custom mm on either side. Locks stay put while you browse.
Sizes are unmounted catalog figures. Foam, stretch-mount, compound batch, siping and cutting all change real mounted height.
Class chips are shopping guidelines, not tech inspection. Rulebooks change and events add their own tech rules —
verify with the sanctioning body before you buy or cut tires for competition.
Filters
Class ceiling
Search
Dimension source —
mfr published by the manufacturer ·
dist distributor or authorized retailer ·
comm community measurement.
Nothing here is estimated: a blank OD means the figure is not published anywhere we could reach.
Comp class ceilings (reference)
Read from each body’s published rulebook. Class names collide between bodies — a SORRCA C2 is not an Iron City C2. Confirm with the series before race day.
Tire card
Select a tire from the list.
Tire A / Tire B comparison
Open a tire, then lock it into a slot. Each slot stays locked while you keep browsing. Swap either side to custom mm anytime.
Not locked
Not locked
Silhouettes
Side (OD × width)
Front (width × OD)
Lock Tire A and Tire B to compare.
A taller tire acts like a higher gear — the same FDR now turns a bigger circumference. Feed the rollout % into the gearing calculator to see where it lands.
Companion tools:
Gearing Calculator ·
Geometry Calculator ·
All tools & guides
Not race tech: verify competition tire limits with your sanctioning body before purchasing or modifying tires.
Not race tech: verify competition tire limits with your sanctioning body before purchasing or modifying tires.