Looking to replace my stock tires and had the S12 AC in mind with a 130 rear as they run on the narrow side. Does the Star Cross 5 run just as narrow? The supplier I want to purchase from only has a 120 rear in the Star Cross 5, also the S12 ac is only available in a 90-90-21 front. The SC5 is available in a 90-100-21 so I may order that for the front. So either a 130 S12 or 120 SC5 for the rear. Just wondering if anyone has tried both and how you found the sizing?