gy6 150 valve check May 1, 2019 17:47:13 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by fuzzyruttin on May 1, 2019 17:47:13 GMT -5 Best reading is about 173 psi after riding a couple miles. Not a big difference from cold reading of 168 using the same tester.