It is normal for the SumoSprings Solo Custom Helper Springs # SSF-106-40 to raise the front of your 2015 Coachmen Prism 2150. The springs are providing additional support to the suspension system from all the additional weight that Coachmen added to your Sprinter Chassis. The tires will still operate in the working angles of the factory suspension so there is no concern over uneven tire wear.
If anything as the suspension is now closer to correct ride height you may see an improved tire... view full answer...