That is correct, if you have bigger tires, your speedometer is lower, so
at 5.78%low and traveling at 65mph, your speedometer will show about
61mph or at an indicated speed of 71mph, you are actually going about
75mph (I rounded, you cannot see .xx of speed).
Shawn Englehart
ArcticRoze@aol.com wrote:
>
> I will agree with Jay. When I went from P255/65R15 tires to 30x9.5R15 (LT),
> I noticed my V6 did loose some umph off the line. Guess I need to do more
> performance mods. The truck now has a bit more of an aggressive look with
> the slightly bigger tires, which I like.
>
> I am very confused by the change with the speedometer readings. I thought I
> read an article in one of the truck magazines recently which said bigger
> tires made you faster than the speedometer reading. So if I was reading 70 I
> am actually traveling at 75, or something like that. Could someone help
> straighten that out for me?
>
> Also when I slow down (light breaking) to stop at a light sometimes me
> steering wheel shakes a little. Is this unbalanced tires or just the
> aggressive tread? Doesn't happen at higher speeds or when I brake harder.
>
> Julie
> 00' SLT+ QC V6 3.9 4x2 Driftwood
> Gibson Exhaust, Quick D Intake & Throttle Body
> http://hometown.aol.com/arcticroze/myhomepage/auto.html
>
> In a message dated 10/25/01 9:54:32 PM Pacific Daylight Time,
> OLZNUT@webtv.net writes:
> << Jay, my old '97 had the 215's which were a 27" tire, I put on the 30's,
> which actually is a 29" tire, so yes, it's gonna be up 2 more inches,
> but the drawback was that I lost a noticeable amount of low end, which
> is not a good thing to lose in a V-6.....
> Ed "Olznut" Halterman Sunland, Ca >>
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