MG Yellow HZ

Name: MG Yellow HZ Kart Tire
Brand: MG

Hardsprint

Updated 2026-03-01

Performance Specs

Grip

Durability

Wet

90-130°F

Temp Range

Heat Cycles

F: 12-14 psiR: 10-12 psi

Pressure

Available Sizes

Position	Size	Rim Diameter	Tread Width
front	10x4.50-5	5"	4.5"
rear	11x7.10-5	5"	7.1"

Class Compatibility

Rotax Senior Rotax Masters Rotax DD2

Sanctioning bodies: Rotax Max Challenge

Overview

The MG Yellow HZ is a hard-compound tire used in the Rotax Max Challenge for hot-weather events and practice sessions. It offers extended durability while maintaining the MG compound characteristics that Rotax racers know.

Ideal For

Hot-weather Rotax events and extended practice/testing sessions.

Pros

Excellent in hot conditions
Very durable for Rotax practice
Cost-effective for testing

Cons

Low grip in cool conditions
Not approved for all Rotax race events
Slow warm-up

Where to Buy

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Frequently Asked Questions

Is the MG Yellow HZ legal for Rotax Senior?

Yes, the MG Yellow HZ is approved for use in the following classes: Rotax Senior, Rotax Masters, Rotax DD2.

What pressure should I run the MG Yellow HZ at?

Recommended starting pressures for the MG Yellow HZ are 12-14 psi (front) and 10-12 psi (rear). Adjust based on ambient temperature and track conditions.

How many heat cycles does the MG Yellow HZ last?

The MG Yellow HZ typically delivers optimal performance for 6 heat cycles. Performance will gradually degrade after this point.

What temperature range is best for the MG Yellow HZ?

The MG Yellow HZ performs best when tire surface temperature is between 90°F and 130°F.