"dont get bigger tires... it will throw off your speedo", i beg to differ Options

[lagos]

so, for years ive always had people say to stay with low profile tires, because anything bigger will throw off your speedo. im sure we've all seen the online calculators and countless threads. ive even had tirerack call me back and try to convince me to change my order from 225-45-17s to 205-40-17s because of this..lol ...

well anyway, i just wanted to say that all that, is mostly a myth. i recently got a gps for my car. my speedo is dead on with the mph reported by the gps. i was a bit shocked because i expected it to be off by at least 1-3mph. so go ahead, get bigger tires and enjoy the ride quality..your speedo will be just fine

This post has been edited by lagos: May 24, 2007 - 9:25 PM

[devilsden97]

car companys actually set there speedo 2 to 3 mph higher then what your going, thats y cops get u for 5mph+....ever see a ticket for 3mph over? I learned with my gps that on stock wheels i can go 50mph on the speedo, but im actually doing 47mph on the gps....gg

you might be onto something. i noticed that my moms matrix, with bone stock wheels and tire size, was slightly off compared to the gps. so it could be that getting bigger tires actually puts your speedo back to where it really should be.

ive noticed it in my celica, and a 2005 toyota matrix (both on stockers) also when i had my aftermarket rims and tires on the celica, i passed a "how fast your going, this is the speed u should be at...SLOW DOWN" police sign, the road was 30, and i was going 30 says the police thing, and my speedo said 30 on the dot...so...idk who cares neway its like 3 mph...no ones gonna write u a ticket for 3mph over neway and if they do...ill pay it.