$10 off when you spend $100, $20 off $200, $30 off $300, $40 off $400, $50 off $500 Off Service Your Way Special Coupon. Use this coupon towards any regular price menu service. Tire Purchases Excluded. Cannot be combined with any other coupons.Coupon does not apply to prior purchases. Other Restrictions may apply. Void where prohibited. BMW Vehicles Only. Valid at BMW of Chattanooga Only. Must present coupon at time of service. See advisor for details.