New Michelin LTX M/S 2

[AztecRol]

Originally Posted by BasicElement

What! The first number is the width. That should NOT effect speedometer. I can see changing the second number OR rim size changing, but not width.

You are incorrect. The second number is a percentage of the width.
If the tire gets wider and the sidewall stays at the same percentage,
in this case 70%, then IT WILL GET TALLER, hence affecting the speedo.

Here BasicElement, enjoy your reading:

http://www.discounttire.com/dtcs/infoSidewall.do

[lizzurd]

Overall diameter of the same size tire can also vary between manufacturer and tread type.

[reno_bk]

Originally Posted by BasicElement

What! The first number is the width. That should NOT effect speedometer. I can see changing the second number OR rim size changing, but not width.

It's true that the first number is the width, but the second number is the aspect ratio -- as in, it's a measurement of sidewall height expressed as a RATIO or proportion of tire width to height. So as you increase the width (from 215 to 225) and keep the ratio constant (70), simple math says that the sidewall has to be taller. There's no way around that calculation.

In this case, the speedo isn't negatively affected much, if at all. The "math" says that I now have taller sidewalls (using 225/70s VS 215/70s) but my speedo reads exactly what my GPS tells me it should, so I'm guessing there was some variance with the OEM tires that caused the speedo to be slightly off. Whatever the case, there just isn't THAT much difference between the 215/70s and 225/70s to really worry about.

[E277]

P.S. I went by Sears yesterday also to see what they would quote and the "out-the-door" on the same setup was $998!

He said they price match but that I needed some print outs from the competitor.

I would just assume get them for $176 at Sam's with $15 per wheel mount/balance.

The 235/70 16s are $198 ea.

[the_eleven]

Originally Posted by Wee Element

An update on the Michelin's. They are unbelievable for ride and noise. No more thoughts on suspension upgrades with this tire on. Softer ride, better handling and way quiet. i am glad I went to these over the Michelin Lattitides and others.

Just bought this tire as well. Very nice!!

[Blushingmule]

Hi all,

Well, TireMax finally got the tires that I ordered back late March. Got home
yesterday after driving over various road surfaces; much smoother & quieter
than the 6 year old OEM tires. Today my neighbor mentioned "boy that's some
big tires". I looked and they are 225/70/16. I was concerned but found this thread.

The aspect ratio (width to height) is obvious.

Looks like all is going to be o.k.

Bob
p.s. will the tire pressures remain the same?

[eedviking]

They should be 225/65 R16.
In relation to the OEM wheel diameter difference is only 4.25 mm and 7 mm in size 225/70R16. Maybe nothing, and yet.

[E277]

70% of 225 is taller off the rim than 70% of 215.

Obviously not much but that is the 2% he is talking about.

[BrownSquirrel]

What air pressure are you folks putting in this set up. (225/70/16)

[bryutas]

Originally Posted by AztecRol

You are incorrect. The second number is a percentage of the width.
If the tire gets wider and the sidewall stays at the same percentage,
in this case 70%, then IT WILL GET TALLER, hence affecting the speedo.

Here BasicElement, enjoy your reading:

http://www.discounttire.com/dtcs/infoSidewall.do

This.

I just got mine on yesterday and so far they definitely have a different feel over the stock (bad)year wrangler HPs. I got them in a 225/70 as well. Calculations are 10mm wider and 7mm taller (or roughly 1/2", 1/3" respectively). Not sure if it feels taller but I notice she accelerates differently (slower). They seem quiter and slightly more comfy and soft but only time will tell for a final eval.

I'm currently running 34/36 f/r as per the car's owner's manual. Might experiment with Discount Tire's "OEM spec" 32/34. Or may e just split down the middle at 33/35.

Anyone got pics of these mounted with the white letters out?