Contact
Send a correction or source
The most useful message includes the exact vehicle, tire, wheel and suspension configuration.
Fitment corrections
Email hello@4wd.ai with the guide URL, vehicle year and trim, tire brand and measured size, wheel width and offset, suspension parts and the condition where contact occurred.
General inquiries
For product questions, partnerships or data sources, use the same address with a descriptive subject line. We do not provide emergency, repair or installation support.