So I am in the process of getting some new tires for the car and was trying to figure out how to spec in the right sizes
for the front and the rear.
If your tire diameter exceeds the 5% different in rotation from the front to the rear then the AH/TC will kick in from what
I have read as it would think you are loosing traction.
I will be putting the tires on the Z06 style repro rims but they have the same stock width size of the OEM rims.
I currently have Firehawk SZ50 EP Run Flats, 245/45R17's and 275/40R18's and was thinking of going with the Kumho
Ecsta MX's or the Nitto Invo's.
Below I tried to figure out the tire diameters and difference from the front to rear and the percentages.
The Firehawk's specs are currently 245/45R17=25.7" diameter and the 275/40R18=26.6" diameter.
If we calculate the overall diameter difference then we take 26.6"-25.7"=0.9"div by 25.7"=0.035x100%=3.5%
There is only a 1.5% threshold for the AH/TC to kick in at this point, is it better to get the % closer to zero as possible?
If I take the Kumho Ecsta MX specs are 255/45ZR17=26.1" diameter and the 295/35ZR18 = 26.1"diameter
then these are a perfect match with no difference in the overall diameter so the AH/TC would not kick in premature.
If I take the Nitto Invo specs 245/45/17=25.79" diameter and the 295/35/18=26.02" diameter.
If we calculate the overall diameter difference then we take 26.02"-25.79"=0.23" div by 25.79"=0.0089x100%=0.89%
There is a 0.89% difference in the two tire sizes.
Does this make sense on the way I have written this up and will the % difference play a big roll with the AH/TC kicking in?
What do you think is better the Nitto Invo's or the Kumho Ecsta MX's for the money? The Kumos are about $1150 installed
and the Nittos would run me around $1350 installed.
Any input on tire size and AH/TC issues would be appreciated.
for the front and the rear.
If your tire diameter exceeds the 5% different in rotation from the front to the rear then the AH/TC will kick in from what
I have read as it would think you are loosing traction.
I will be putting the tires on the Z06 style repro rims but they have the same stock width size of the OEM rims.
I currently have Firehawk SZ50 EP Run Flats, 245/45R17's and 275/40R18's and was thinking of going with the Kumho
Ecsta MX's or the Nitto Invo's.
Below I tried to figure out the tire diameters and difference from the front to rear and the percentages.
The Firehawk's specs are currently 245/45R17=25.7" diameter and the 275/40R18=26.6" diameter.
If we calculate the overall diameter difference then we take 26.6"-25.7"=0.9"div by 25.7"=0.035x100%=3.5%
There is only a 1.5% threshold for the AH/TC to kick in at this point, is it better to get the % closer to zero as possible?
If I take the Kumho Ecsta MX specs are 255/45ZR17=26.1" diameter and the 295/35ZR18 = 26.1"diameter
then these are a perfect match with no difference in the overall diameter so the AH/TC would not kick in premature.
If I take the Nitto Invo specs 245/45/17=25.79" diameter and the 295/35/18=26.02" diameter.
If we calculate the overall diameter difference then we take 26.02"-25.79"=0.23" div by 25.79"=0.0089x100%=0.89%
There is a 0.89% difference in the two tire sizes.
Does this make sense on the way I have written this up and will the % difference play a big roll with the AH/TC kicking in?
What do you think is better the Nitto Invo's or the Kumho Ecsta MX's for the money? The Kumos are about $1150 installed
and the Nittos would run me around $1350 installed.
Any input on tire size and AH/TC issues would be appreciated.
