I'm driving a 2012 Honda Accord SE that shudders during acceleration. The acceleration is smooth until I get to 20 mph and then it has a light shuddering until I hit 30 mph. That is the only time it occurs. It had been going on for a few months and I recently though that when it was time to replace my tires it would be taken care of. Nope, still happens after new tires were installed by Discount Tires. Would appreciate your suggestions on what to do.