LeCont SV1

Name: LeCont SV1 Kart Tire
Brand: LeCont

Softsprint

Updated 2026-03-01

Performance Specs

Grip

Durability

Wet

72-100°F

Temp Range

Heat Cycles

F: 10-12 psiR: 8-10 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

KA100 X30 Rotax Senior

Sanctioning bodies: ROK Cup, SKUSA

Overview

The LeCont SV1 is a soft compound sitting between the medium SV2 and the maximum-grip Red SVA. It is popular in series that allow tire choice, offering strong grip with a more manageable degradation curve than the ultra-soft Red.

Ideal For

Race day in sprint classes where tire choice is open and conditions are temperate.

Pros

High grip without extreme degradation
Faster warm-up than SV2
Good for race day in temperate conditions

Cons

Shorter lifespan than SV2
Not as grippy as the Red SVA
Limited class approvals in some series

Where to Buy

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Frequently Asked Questions

Is the LeCont SV1 legal for KA100?

Yes, the LeCont SV1 is approved for use in the following classes: KA100, X30, Rotax Senior.

What pressure should I run the LeCont SV1 at?

Recommended starting pressures for the LeCont SV1 are 10-12 psi (front) and 8-10 psi (rear). Adjust based on ambient temperature and track conditions.

How many heat cycles does the LeCont SV1 last?

The LeCont SV1 typically delivers optimal performance for 2 heat cycles. Performance will gradually degrade after this point.

What temperature range is best for the LeCont SV1?

The LeCont SV1 performs best when tire surface temperature is between 72°F and 100°F.