I have at least 2 13 x 7.5 in the crosswires style, it was too dark in the shed to see if ive got a complete set of 7.5, i think the front pair may have been narrower? will check when theres a bit more daylight
EDIT:
hmm yup it must have been dark or i was pissed cause they are all 7's sorry guys, if anyones still interested i can post a pic