chrisb55

Ok, so 3 car tires:

Yokohama AVID V4S : $110 VR 500 AA A 1433 lbs 50 psi 10/32" 25 lbs 809

Bridgestone Turanza LS-V : $149 VR 400 AA A 1521 lbs 50 psi 11/32" 26 lbs 837

Michelin Pilot HX MXM4 : $194 VR 300 AA A 1433 lbs 41 psi 10/32" 23 lbs 819


All fit the TSX,. Yet....all 3 rotate a different amount of times in order to drive 1 mile.

Questions:
1) How does the car actually know if it drove a mile on one tire vs. another when the actual wheel rotates a different amount of time? Will putting anything other than the crappier Michelin make the car believe it drove a little less/more than it really did (i know its like a .01% difference)?

2) Won't one tire wear more than another? The Bridgestone has to rotate more times in order to drive the same distance than the Yoko does.

3) Is it best to stick to all the parameters of the Michelin on the stock rims? For best handling/economy

acn684

the car doesn't, hence driving with 18 inch rims gives a false estimate on the mileage, im not sure about speed however, of the car because the car only reads rotations, and distance traveled is mesured by circumference.

the difference resulted from thsoe 3 tires are due to the profile of the tire, low profiles = smaller circumference. The inner circle of the tire is 17 inches to your rims, but the outside circumference is dependent on the profile of the tire.

I think the bridgestones will wear less i believe. You travel a greater distance per rotation with the bridgestones, hence, in the same distance, your tire would've rotated less with the bridgestone. THink of it another way, the bridgestone is thicker 11/32 vs 10/32. there is more rubber, there is more to wear down.

It won't make a big difference, however, it will affect it slightly, but not as much as say 18 inch rims. THe larger the wheel, the more energy required to rotate it. But to the degree of 10/32 vs 11/32, i hightly doubt a huge difference.

chrisb55

In that case, why does the Bridgestone have to rotate more times in order to drive the one mile given the fact that it's wider and has more tread?

acn684

I think i said bridgestones rotate less?

Hrm..lemme clarify.

Bridgestones have thicker tires, or larger profile. This means the circumferance is greater on the bridgestones in comparison. Larger circumference means that each rotation covers a greater distance.

So in a given 1 mile, for example, if we were to roll a large wheel and a small wheel the small wheel would have to rotate more times to cover the distance. Or, in other words, the larger wheel would require less rotations.

Less rotations = less times a single area of thread touches the road = less wear.

However in the same notion, it would probably take more energy to rotate that tire once, due to the size. This is why you see that 18' inch rims have slower 1/4 times than 17 inch rims.

However, in your case, i don't know how much a difference (significance) 1/32 of an inch would have...

chrisb55

Yes, I do understand how to measure circumfrence and understand the concept you present. However, the specifications as noted in my first post, show that it rotates MORE. My question is why.

spc

Since we don't have the physical tire to measure, however, based on this discussion, LS-V should have the smallest circumference among those three?

chrisb55

The whole specs are very counter intuitive. The extra 1/32 on the Bridgestones make one belive that the rubber is thicker, greater circumfrence, and thus less rotation....however, specs show they rotate more and that points to smaller circumfrence...

....unless the tires are lower profile, with a larger amount of actual tread on the tire?

ILoveMyHonda

are all these the same size tire?

Also the 11/32 doesnt neccessarily mean there is more rubber. The water siphons between the treads could be deeper.

acn684

oh crap...i thoguht that was a measure of some sort of circumference.

Perhaps Ilovemyhonda is right, its just a thread thickness, the tire itself can be a different size depending on how thick the rest of the tire is. ie. from inner wall to the rubber before the threading starts to wear out.

chrisb55

Yea, that's what I mentioned before, I think thats the only way this thing makes sense.
I've read plenty of reviews on the tire and the Bridgestone compared to the Yoko has better ride quality and less noise. I guess then that that has to do with it having more tread on the tire, even though the rubber itself is smaller in circumfrence b/c that's what we just assumed in order for the specs to work out.

Any other thoughts?

vwong

There are couple things that would contribute the differences.

1. Sidewall stiffness will change the "rolling circumference". The softer the sidewall, the more the tire will compressed. Therefore the distance between the center of the wheel to the ground (the tire contact) is shorter, and in the result, the "rolling circumference" will become smaller.

2. At what tire pressures were each of those tires measured? Kinda same concept as #1. Less tire pressure means the sidewall is more compressed.

vwong

Not unless you use the correct 18" tire size. 18" rim has nothing to do to give false mileage, however wrong tire size will. Many people on here with 18" wheels are using 225/40/18 which is about .4" smaller in diameter than the stock tire. 235/40/18 is a much better match to the stock diameter. It has a 25.4" diameter which is only .1" smaller than stock.

chrisb55

So we're agreeing that the Bridgestone Turanza LS-V has an actual thinner wall, with a larger tread? Saying that they were inflated to the same tire pressure when tested...

spc

Another choice with ultra high performance all season and its revs per mile is very close to stock oem:

Bridgestone Potenza RE960AS : $159 W 400 AA A 1521 lbs 50 psi 11/32" 26 lbs 817

Shorei

The Bridgestone company site has the 960AS at 25 pounds, Tire rack has it at 26.
How much of an affect on acceleration does 2 pounds make? 3 pounds? How much of an affect on handling? It does have some I would think. Anyone have any specs on that?
Also, does anyone know how much the TSX OEM rims weigh - I have a '04. One can buy rims that weigh 16 pounds upt to 22/23 pounds but I need tires and brakes, want to upgrade my speakers, get a cold air intake so I will keep the rims I have for now.

spc

Someone here measured OEM tire with rim is about 46 lbs. So the rim itself weight around 23 lbs.

Besides, extra 3 lbs times 4 equal 12 lbs. For TSX which weight 3250+ lbs, 12 lbs could consider negligible.

Shorei

The unsprung weight at the wheel can make a difference even if it is only a few pounds. Someone did a 0 - 60 on OEM +1 and +2 rims and tires and by the time it got to +2 the 0- 60 times went up due to the weight and probably the tire width as well.

4 new rims weighing 16 lbs apiece could make the car feel a bit peppier. It doesn't seem likely that 2 or 3 lbs could make any difference could but you never know. Turn in can also be affected by a heavier tire as well.