Originally Posted by
akexpress
I would check clearances before you buy new tires. Based on the age of the your tandem your fork may be the limiting factor. 28mm may be as big as you can ride on the front. We like GP4000 and GP 4 seasons ( better flat protection)
I have a new carbon fork from House of Tandems with tons of clearance for a bigger tire on the front. The rear however may be my limiting factor