I appreciate your reply regarding the size differential.
I have visited the tire caculator site earlier and found the same difference you mention.
I have lived back east for some time and have run Blizzaks for over 10 years.
There is nothing like them.
My vehicles for the past +10 years have been front wheel drive.
The Blizzaks have been great.
This is the first car I have had in some time that is rear wheel drive.
The regular tires I am running are Goodyear Eagle GT +4 and on this GS 430 do very little in terms of traction in the snow.
Lexus reccomends the Blizzak LM-25, but I an told by tire dealers they really compromise traction in the snow ad ice for performance during the winter months when the roads are clear.
The tire dealer reccomends the WS 50 or 60 series.
WS 50 is made in a 55 aspect, and a 225 width, quite possibly sold out.
The dealer tells me they are too wide for the snows back east.
In reality I believe that the difference in a 225 v. a 215 is about 1/2 inch.
WS 60 is available in a 60 aspect and a width of 215...and is not sold out.
Again my concern is the effect on the car's navi, abs, and speedo/odometer systems.
Is there any concern I should have because of the speed being off 1.57% on the car's computer system?
And do you think 225 v 215 will have any affect how the car handles snow on the road, maybe 3 to 6 inches?