Track width — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/track-width/  (sheet CC BY 4.0)
Basis: Design rules and figures from the cited sources; example geometry by Xem Studio
Catalog version: 2026-10-20

Sizes: see table below
- Track width governs side-to-side stability while wheelbase governs front-to-rear stability (CompetitionX). It also appears directly in the Ackermann condition (raw.org).
- RC classes set it by maximum car width: 190 mm without body for EFRA touring cars, 250 mm for 1/10 off-road, 172 mm for 1/12.

parameter  value or range  source
EFRA touring width  190 mm without body, 200 mm with  EFRA
ISTC width  170-190 mm without body  AARCMCC
1/10 off-road max width  250 mm  EFRA
1/12 max width  172 mm  EFRA
FSAE example  1262 mm front, 1392 mm rear  Univ. of Utah FSAE

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- CompetitionX: RC Wheelbase Explained — web — Publisher's page; dimensions are facts — https://www.competitionx.com/?p=1253
- raw.org (kinematics notes): Ackerman steering — web — Publisher's page; dimensions are facts — https://raw.org/book/kinematics/ackerman-steering/
- EFRA: EFRA Handbook 2010, Appendix 3: Electric Cars — web — Publisher's page; dimensions are facts — https://www.efra.ws/wp-content/uploads/2010/03/Handb10App3.pdf
- AARCMCC: Section 3: Electric On Road, Technical Rules (Oct 2006) — web — Publisher's page; dimensions are facts — https://www.rctech.net/forum/attachments/australian-racing/180184d1162811203-aarcmcc-online-tech-road-oct-06.pdf
- University of Utah, Mechanical Engineering: Formula SAE Suspension System (senior design) — web — Publisher's page; dimensions are facts — https://mech.utah.edu/wp-content/uploads/2024/12/5-Formula-SAE-Suspension.pdf

No true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.
API: https://xemstudio.com/api/geometry?object=track-width