Please give as much information as you can so we can answer as completely as we can. We normally answer all questions within a few hours. It may take longer on the weekends or holidays. If your question is about a tire size, please give me the current size on the machine. DO NOT TRUST YOUR SPEC BOOK OR MANUAL. If your question is about shipping charges, please give me your zip code. If I need to speak with you over the phone, I will be glad to give you our phone number. In most cases, the answer can be given much faster thru the email over a phone call.