Airwolf9090 Posted October 1, 2013 Share Posted October 1, 2013 Right now i have two new 205/55R16's on the front and the rear two are ready to blow, Now i picked up two tires at the junkyard they look brand new they are Firestone Winterforce tires and they are 225/50R16's they look about the same height just wider, would it be fine to run them? http://www.tirerack.com/tires/tires.jsp?tireMake=Firestone&tireModel=Winterforce&partnum=25SR6FWF Link to comment Share on other sites More sharing options...
Kennyfvholla Posted October 1, 2013 Share Posted October 1, 2013 They're technically just short of 2/100th's of an inch taller in OD. But, you should make sure that they clear the spring perch. If you have two different pairs of tires, your really supposed to run one set on the left and one set on the right. But in your case they are two different section widths which would cause handling issues... What are the differences in tread between the sets? Link to comment Share on other sites More sharing options...
Airwolf9090 Posted October 1, 2013 Author Share Posted October 1, 2013 Like 1/8th of a inch from the struts, got them mounted and bal, Link to comment Share on other sites More sharing options...
Kennyfvholla Posted October 1, 2013 Share Posted October 1, 2013 It looks like they're touching the perch Link to comment Share on other sites More sharing options...
Airwolf9090 Posted October 2, 2013 Author Share Posted October 2, 2013 Thats the thing they are not, Thats what me and the guy who mounted them were worried about but they are close but don't touch Link to comment Share on other sites More sharing options...
Idaho subaru Posted October 2, 2013 Share Posted October 2, 2013 They're technically just short of 2/100th's of an inch taller in OD. What are the differences in tread between the sets? They are only 2/100th's of an inch taller, but that's not the critical part. Also, that is based on the tires being new. The critical measurement is the circumference. Again though, based on new tires, the difference is .07 inches or 1.57 mm, which translates to about a .05 mph difference in speed. Again though, moot point since these are based on new tires. The difference in the tread between the the 205's and 225's is the crux. Let's say you're down 2.5mm on the the tread of the 205's. That changes the circumference by nearly 15mm! Nearly .5 or 1/2 mph speed difference! In revolutions per mile, That equates to the 205's making nearly 7 more revolutions per mile than the 225's! I'm not a drivetrain specialist, but that sounds like trouble. If it were me, I wouldn't do it unless it was a 2WD, or it was a vehicle with a transfer case that could physically disengage the 4WD. Just my opinion, look forward to hearing how it works out! FYI, if you want to check the difference between the two tires, get an OD Tape from the hardware or pipe supply store and check the circumference for yourself. Best of luck. Link to comment Share on other sites More sharing options...
Airwolf9090 Posted October 2, 2013 Author Share Posted October 2, 2013 Well the 205's are brand new like 1K miles on them, the 225's are used junkyard specials, I been driving it with the tires and haven't had no binding in the drive train. Link to comment Share on other sites More sharing options...
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