195/65/15 to 215/60/15

I have been offered a good set of 215/60/15 winters. Can I use them on my
2000 Accord SE that runs 195/65/15. Thanks

 

The new size will be just fine as far as the speedometer goes (speedo will
read about 2% too slow), but the new tires are 3/4" wider. That's NOT a
good thing in winter, and will negate some of the advantage of the winter
tread.

 

yeah,but your speedometer/odometer will be off,not reading accurately.
Not by much,though. it will read higher than actual speed,and odometer
miles will be less,because of the slightly smaller circumference.
I suppose you could measure them both to find the difference,and calculate
the error.

you might have wheelwell clearance problems with the wider tread.

--
Jim Yanik
jyanik
at
localnet
dot com

 

Sure you can. The difference in circumference is about 1/2 inch and as
Tegger noted...your speedo reading will be off only a miniscule amount. The
difference in height is about 3/10 of an inch so clearance in that plane
shouldn't be a concern. The difference in width is about ,8 of an inch.
However, as Tegger pointed out, the wider tire will not perform as well in
winter conditions as the narrower tire, given all other factors are
comparable.

DaveD

 

that should be "actual miles driven will be less than the odometer
indicates".

--
Jim Yanik
jyanik
at
localnet
dot com

 

Actually, 0.7% too slow. The circumference of a tire is based on its
radius, not its sidewall alone. At 60mph, the nominal difference would be
around 0.4mph.

Recall that the rim is 15", so its radius is 7.5" or 190.5mm.

 

Yep. My bad, as they say these days. I must have hit the wrong keys on my
calculator, then not bothered to double-check.

The correct arithmetic:

(15" wheel = 381mm diameter.)

215 * .60 * 2 = 258mm
195 * .65 * 2 = 253.5mm

258 + 381 = 639mm tire diameter
639 * 3.14159 = 2007.4mm rolling circumference

253.5 + 381 = 634.5mm tire diameter
634.5 * 3.14159 = 1993.3mm rolling circumference

2007.4 / 1993.3 = 100.7%

Therefore, the 215 is 0.7% larger than the 195.

As far as the speedometer and odometer go, the tires are the same.

 

But your not dealing with the circumference of the wheel. You have to
figure in the tire as well. As I posted earlier, the difference in
circumference of the two tires was about 1/2 inch.

DaveD

 

Which is an insignificant 0.7% on the speedometer, as Paul pointed out..

 

Thanks to all.

 

Yeah, but you can find the percentage difference from the radius of the tire
directly. The percentage difference should be less than 3% either way,
with practical considerations factored in. Most people do not even know
what the numbers on their tires mean!

 

And you find that by knowing the diameter of the wheel. You can't find
ANYTHING without knowing the wheel diameter. You can get a 215 for a 15"
wheel, or a 16", or...

We've already confirmed that the difference in this case is 0.7%.

 

actually,going from a 65 profile to a 60 will make the speedo read HIGH;
the smaller tire circumference means you are travelling LESS distance over
the same time/RPM,and thus the car will be slower than INDICATED speed,and
actual miles driver will be lower than indicated miles.

a 60 profile tire has a smaller circumference than a 65 profile tire.

of course,that adds in with whatever OTHER errors your speedometer/odometer
already has.

--
Jim Yanik
jyanik
at
localnet
dot com

 

No! You are mistaken. If the tire diameter did not change then you would be
correct. However, in this case, the 215/60/15 has a greater diameter than
the 195/65/15
///snipped///

 

You mean if the tire WIDTH did not change, then Jim would be right.

195 * .65 = 126.75
215 * .60 = 129

20mm wider but 5% shorter means a LARGER diameter.

 

Right. Sorry 'bout that. Fingers were going faster than the brain. Not
too uncommon fer me

DaveD

 

Not to mention tire pressure which also is also can be a factor in
effective tire diameter...

Y'all r quibblin' with much about nuthin...

JT