While an individual hobbyist is unlikely to be sued by Lotus, companies have received cease-and-desist letters for using unlicensed software. In one incident, a small racing team was disqualified from an amateur series after a competitor reported their use of pirated LSA.
Lotus Suspension Analysis (specifically the SHARK module) is a market-leading software for designing and optimizing vehicle suspension geometry. Version 5.03 is a standard iteration used frequently by automotive engineers and Formula Student (FSAE) teams to simulate 2D and 3D kinematic models. Key Features of Lotus Suspension Analysis lotus suspension analysis 5.03 free download
If you need LSA specifically for a project, here are legal routes: While an individual hobbyist is unlikely to be
For those unfamiliar with the software, the allure of a "free download Version 5
You don't actually need LSA 5.03. Modern free/open-source tools can do much of the same analysis: