215/75r15 and 225/70r15 are both in between those sizes, with the 225 being the wider and the 215 being slightly taller. they are both fairly common and shouldnt be too expensive.

cone filter, boche platinum 4 plugs, 235/75/15 kumho all terrains jeep tj rear springs and rav 4 rear shocks, rocksport gear 4" front springs, warn manual hubs, 2.25 inch exhaust, no cat, 48" thrush glasspack