Hello Kurt!

What bothered me were the tires. No spare, different sizes on the front
and back, and one manufacturer in that size. the tires were around $250
a corner and wore out in 25-30K miles.

Never heard of cars having different tire sizes for front and back.

Did yours have 19" at the front and 20" at the back?

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What bothered me were the tires. No spare, different sizes on the fr
and back, and one manufacturer in that size. the tires were around $
a corner and wore out in 25-30K miles.

Never heard of cars having different tire sizes for front and back.
Did yours have 19" at the front and 20" at the back?

BMW does staggered setups on a lot of cars, where the width of the back tires is greater than the front. In addition, they have some cars (like the M2 CS) that have different sizes on front and back (and widths). M2 CS has 19 in the front and 20 in the rear. I had an X3 M40i. 20" all around but staggered and directional summer runflats. Can't rotate, 15-20k miles tops out of each tire, and after labor and all $2250-2500 for a set of tires.


Rob

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August Abolins wrote to Kurt Weiske <=-

Never heard of cars having different tire sizes for front and back.

Did yours have 19" at the front and 20" at the back?

155/70R19s in the front, 175/60R19s in the back. Wear out in around 24K
miles, and they're around $250 each.



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What bothered me were the tires. No spare, different sizes on the front
and back, and one manufacturer in that size. the tires were around $250
a corner and wore out in 25-30K miles.

Never heard of cars having different tire sizes for front and back.

Did yours have 19" at the front and 20" at the back?

I have a 1993 Dodge Dakota pickup that has the same size tires all around,
but calls for the fronts to be inflated to 5 PSI less than the rears. This
is the first, and only, vehicle I have owned that did that.

Mike


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Mike Powell wrote to AUGUST ABOLINS <=-

I have a 1993 Dodge Dakota pickup that has the same size tires all
around, but calls for the fronts to be inflated to 5 PSI less than the rears. This is the first, and only, vehicle I have owned that did
that.

That makes sense - if you're loaded to the hilt, you'd need additional
tire pressure to help support the weight.

Speaking of which (maybe this should go to AUTOMOTIVE?) I read an
interesting article. I've had the past few sets of high-mileage tires wear
out on the outer edges. I thought it was alignment, then realized both inner and outer edges were worn. I kept the tires at the recommended pressure. Apparently the recommended pressure is intended for a fully-loaded vehicle. Driving solo under-loads the tires. I started inflating them a couple of PAI higher and got better life from the tires.


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I have a 1993 Dodge Dakota pickup that has the same size tires all around,

>but calls for the fronts to be inflated to 5 PSI less than the rears. This
>is the first, and only, vehicle I have owned that did that.

That's unusual if the tires are the same all around. Back when I had my
muscle cars my front tires would be the usual 28 lbs or so but the
15 inch wide, low profile, rear tires would be under 20 lbs..

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I have a 1993 Dodge Dakota pickup that has the same size tires all
around, but calls for the fronts to be inflated to 5 PSI less than the rears. This is the first, and only, vehicle I have owned that did
that.

That makes sense - if you're loaded to the hilt, you'd need additional

>tire pressure to help support the weight.

That's a good point. I missed that, and I shouldn't have because,
regardless of recommenations, when I had a Ford F150 with special
suspension to carry over 2000 lbs, I often had my rear tires
inflated as much as 10 lbs higher than the front.

Speaking of which (maybe this should go to AUTOMOTIVE?) I read an

>interesting article. I've had the past few sets of high-mileage tires wear
>out on the outer edges. I thought it was alignment, then realized both inner
>and outer edges were worn. I kept the tires at the recommended pressure.
>Apparently the recommended pressure is intended for a fully-loaded vehicle.
>Driving solo under-loads the tires. I started inflating them a couple of PAI
>higher and got better life from the tires.


Someone can correct me if I'm wrong but, it seems to me of your
tires are carrying less load than the tire pressure is set for,
the wear should be in the middle, not the outer edges, since the
weight isn't there to flatten the tire right down to the road
surface.. (?)

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Rob Mccart wrote to KURT WEISKE <=-

Someone can correct me if I'm wrong but, it seems to me of your
tires are carrying less load than the tire pressure is set for,
the wear should be in the middle, not the outer edges, since the
weight isn't there to flatten the tire right down to the road
surface.. (?)

Now I'm confused!


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Someone can correct me if I'm wrong but, it seems to me of your
tires are carrying less load than the tire pressure is set for,
the wear should be in the middle, not the outer edges, since the
weight isn't there to flatten the tire right down to the road
surface.. (?)

Now I'm confused!

Looking at it the opposite way is easier to picture..
If you over-inflate the tires then they will bulge out and
wear more in the middle and not at the outer edges..

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