Mudge Posted January 14, 2003 Share Posted January 14, 2003 Not much difference in profile or OD, so its really up to you. Look at RPM per mile, a 45 will last a little longer due to less revolutions per mile, but they are not all that different from each other. I would go for 40 myself, but really its not a huge difference. Quote Link to comment Share on other sites More sharing options...
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