OK, I think I found some contact info. You might have to go through Toyota since they are the parent to Lexus.
Try this and see where you get...
Whom can I talk with about a dealer problem or complaint?
Call our Customer Assistance Center at 1-800-331-4331, or write us at:
Toyota Motor Sales, U.S.A., Inc.
19001 South Western Avenue Dept. A102
Torrance, CA 90509
Lexus Customer Assistance Center
P.O. Box 2291 - Mail Drop 202
Torrance, CA 90509-2991
M-F 6:00 AM - 5:00 PM PST
Lexus Extra Care 1-800-448-1505 (Extended warranties, insurance, etc.)
Goodyear customer service: 1-800-321-2136, press #3 to speak with a Goodyear representative
Michelin customer service: 1-800-847-3435
Bridgestone customer service: 1-800-847-3272
Firestone customer service: 1-800-356-4644
Dunlop customer service: 1-800-828-7428