2019 IMSA Prototype Challenge


Latest Guide: V1– 13 March

Welcome to the official IMSA Spotter Guide for the IMSA Prototype Challenge. This is a season long guide which includes all the full time entries along with a few which are expected to compete in most of the races.

The series features IMSA ‘LMP3’ race cars . You can follow race coverage at IMSA.com/ IMSA.tv and through the IMSA app.

A printed version of the guide  will be available in the Prototype Challenge paddock during race weekends.


Thanks to IMSA for partnering with the guide. If you get a few seconds, please thank IMSA on Twitter. Without their support, there would be no guide. Thank you to all the teams who have helped with creating the guide.


NOTE: Please fill free to share the guide on Social Media, but PLEASE LINK TO THIS PAGE and not the guide (as file names change with updates, particularly with the month change this week) so your friends and fans can download the latest version of the guide! I can also track data easier which in turn helps my quest for sponsorship