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**'68OrangeSunshine** · 08-21-2009, 06:18 AM

I have a '71 Jimmy with 33x12.50x15s. I once got pulled over by the AZ DPS [Dept of Public Safety= Highway Patrol] on I-10. I had been going 75 MPH, the posted limit, so I waved at the bear in the median as I clipped by one Sunday morning. He started up -- chased me -- and pulled me over. I told him the story about the larger tires, etc and that I thought I was doing the legal limit... This guy pulled out some scratch paper and a pencil, and started cyphering Pi x R squared on the hood of his cruiser, and came up with a percentage formula that my speedo was out by so much. 7 to 10%, I think. He let me go with a verbal warning.
All those nice guys have long since retired. Now I use a GPS.

08-21-2009, 06:18 AM	#6
'68OrangeSunshine Senior Member Join Date: Feb 2002 Location: Tucson, AZ USA Posts: 7,622	Re: 71 Blazer 4X4 Speedometer I have a '71 Jimmy with 33x12.50x15s. I once got pulled over by the AZ DPS [Dept of Public Safety= Highway Patrol] on I-10. I had been going 75 MPH, the posted limit, so I waved at the bear in the median as I clipped by one Sunday morning. He started up -- chased me -- and pulled me over. I told him the story about the larger tires, etc and that I thought I was doing the legal limit... This guy pulled out some scratch paper and a pencil, and started cyphering Pi x R squared on the hood of his cruiser, and came up with a percentage formula that my speedo was out by so much. 7 to 10%, I think. He let me go with a verbal warning. All those nice guys have long since retired. Now I use a GPS. __________________ Every 25 years I like to rebuild that 292, whether it needs it or not. Last edited by '68OrangeSunshine; 08-21-2009 at 06:19 AM.