Yokohama says 225/50R18: 28.6lbs and 245/45R18: 29.5lbs
When I dusted off my stock wheels with half the tread gone and did the math I came up with 20F and 21.5R, but my scale isn't super accurate. Adding back a bit of rubber and I could get your number of 21 for the front.
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Stillen G3 | Berk HFC | Megan Y-Pipe | Top Speed Y-Back | Braille Relocate | 4.08 Frontier Gears | Quaife LSD | Enkei RPF1 | Conti DW | Redline Fluids | Swift Springs
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