jetsfan101

nyc roads are bit harsh imo for my 255/35/19 tires i am thinking of getting 245/40/19 to add some meat to the tire for softer ride

has anybody done this? please input your thoughts/impressions on that size. Most importantly, please post pictures i am concerned the rim will "look" smaller.

Is there any information on how to recode the computer via vag-com to correct the speedometer change?

TwoSnails

Make sure the tires are rated for the weight of the car.

jetsfan101

tires im looking at are 98W (1653lb; 750kg) per tire

I would think thats good since my OEM Continentals were 93H

TwoSnails

that should be good. What size are the wheels?

VMRWheels

About a 17.5mm diameter difference. At stock height I don't believe you will get into any rubbing issues. And if you don't mind the speedo being off then even better.

jetsfan101

19" (245-40-19)

Do you know how to recode the wheel diameter through vag-com?

Im gonna have to dig a little on that because OEM for my A6 is 245-40-18. Thats rolling tire diameter of 25.72 in.

245-40-19 are 26.72in in diameter, therefore they spin less frequently which in turn reads to a slower speed reading. So if my speedo will show 60MPH i am actually doing 62MPH.

Then again, if the rumors of audi adding a few MPH to your "speedo speed" is true, i may just offset that and get myself a true GPS speed

jetsfan101

im pretty sure theres a way to recode the wheel diameter through the vag-com

2008A6

The rims will prob look a bit smaller to you, especially if you're not lowered. I just went from 245/35/19 to 255/35/19 and the wheels appear smaller to me.

DirtyVegasTT

I had 255/40/19 on my S6 ET 52 Stock wheels. It was fine even when lowered with spacers. My pictures in album below show how the tire that size loogs on stock S6 rim.

V6UnderPressure

[QUOTE=jetsfan101;24021079]nyc roads are bit harsh imo for my 255/35/19 tires i am thinking of getting 245/40/19 to add some meat to the tire for softer ride

has anybody done this? please input your thoughts/impressions on that size. Most importantly, please post pictures i am concerned the rim will "look" smaller.

Is there any information on how to recode the computer via vag-com to correct the speedometer change?[/QUOT

In that size you are limited to a small number of tires. I wanted to go with that size as well which would have been perfect. Here are the different specs for the tires side by side:
Stock Tire - 255/35R19
Search Tires Tire 1 - 245/40R19
Section Width: 10.03 in 255 mm
Section Width: 9.64 in 245 mm

Rim Diameter: 19 in 482.6 mm
Rim Diameter: 19 in 482.6 mm

Rim Width Range: 9.5 - 10 in
Rim Width Range: 8 - 9.5 in

Overall Diameter: 26.02 in 660.90 mm
Overall Diameter: 26.71 in 678.43 mm

Sidewall Height: 3.51 in 89.154 mm
Sidewall Height: 3.85 in 97.79 mm

Radius: 13.01 in 330.45 mm
Radius: 13.35 in 339.09 mm

Circumference: 81.74 in 2076.1 mm
Circumference: 83.91 in 2131.3 mm

Revs per Mile: 799.3
Revs per Mile: 778.7

Actual Speed: 60 mph 100 km/h
Speedometer1: 58.4 mph 97.4 km/h

Speedometer Difference: - Speedometer Difference: 2.645% too slow
Diameter Difference: - Diameter Difference: 2.59%