I've been in sales a long time. Not bikes. These are questions that are asked to get the customer talking. Customers love to talk about themselves and their hobbies.

"What kind of bike do you ride now?"

"How long have you had it?"

"What do you like about it?"

"What don't you like about it?"

"What do you want to improve on with your new bike?"

There are other questions that may pop into my head depending on how those questions are answered.

I never ask a customer what their budget is. When the time is appropriate, the customer will tell you.