Kuschall Champion wheelchair:
https://kuschall.com/uk-en/wheelchairs/champion/ 

Available in 5 different colors

Full PBR materials, created in Substance Painter

PBR Texture Maps Included for Corona/Vray and metall/Rough

Diffuse and Base color

Roughness

Reflection Color

Reflection Glossiness

Normal

Metallic

IOR

Displacement


Formats Included in the Archive

3ds Max 2018 (VRay & Corona)

FBX files

All necessary texture maps

Additional Info

All objects and materials are logically named

Preview renders created using Corona Renderer

Materials fully created in Substance Painter

Important Notes

For V-Ray versions earlier than 3.1, note that the BRDF is set to Microfacet GTR (GGX). If you're using an older version, the BRDF field may appear empty — please switch to Blinn, Phong, or Ward as preferred.

For Corona Renderer, version 1.5 or newer is recommended to ensure accurate glossiness as per PBR workflow.