STMU 0.7'' MUD Tires for 1/30 1/32 RC Crawlers - Soft Sticky 40x16mm

The STMU 0.7-inch MUD Tires measure 40 mm in height and 16 mm in width, designed for 1/30 to 1/32 scale RC crawlers such as the Axial SCX30 and Redcat Ascent-32. They use a soft sticky compound that provides strong traction on mud, rocks, and loose surfaces, and come with pre-installed foam inserts for quick mounting without trimming.

This upgraded sticky compound resists wear and maintains its properties in both hot and cold conditions, so the tires stay supple and grippy across a range of outdoor environments. With a customer rating of 4.2 out of 5 stars from 18 reviews, many hobbyists have found them reliable for trail and upgrade builds. They rank #585 in RC Vehicle Tires on Amazon as of January 2026.

Traction on tough terrain

Designed for all-terrain use, these tires deliver strong traction on dry, loose, wet, muddy, and rocky surfaces. The soft compound conforms to irregularities on rocks and roots, helping the crawler maintain forward bite. For micro crawlers in the 1/30–1/32 scale range, this grip can be a significant upgrade over stock tires with harder rubber.

Exact measurements for your build

Which RC crawlers work with these tires?

These tires are compatible with 1/30 scale Axial SCX30 and 1/32 scale Redcat Ascent-32 setups. They also fit other micro crawlers that use 0.7-inch beadlock wheels. The included foam inserts are factory-sized for this rim diameter, so no cutting is needed for proper fitment.

A closer look at the compound

The soft sticky rubber compound is formulated to offer high wear resistance while remaining supple. According to the manufacturer, it maintains performance in both heat and cold, which is important for outdoor crawling in varying weather. Many users report longer tread life compared to standard soft compounds.

Common questions about the STMU 0.7'' MUD Tires

1. Do the tires come with foam inserts? Yes, they include factory-sized foam inserts for quick installation.
2. Are these tires suitable for rocky terrain? Yes, they are designed for all-terrain use including rocky surfaces.
3. What is the rim diameter? The rim diameter is 0.7 inches, matching standard 0.7 beadlock wheels.
4. How much do they weigh? The item weight is 0.634 ounces (about 18 grams).