Question about speedo reading

[dolamite]

The front tires i want will throw my speed off by 1.6% too fast, and the rear tires will be 1.1% too slow, will that effect anything?

Thanks!

235/45/18 front?255/45/18 rear?

2004 g35 sedan

[Sentientbydesign]

Yes, I already addressed this in your other thread. Also, if you do a search you'll find another member who encountered this same problem.

The VDC will auto disable and your slip light will stay on if the ratios deviate too far from the factory radii.

The 235/50/18 and 255/45/18 would be a better combination.

The fronts will be off by 1.5% too slow and the rears will be off by 1.1% too slow, making for a .4% error which is well within operating conditions.

[dolamite]

thanks a bunch, i feel better talking to people who actually own a G35. I will get on the horn and order my Kumho Ecsta ASX this weekend.

235/50/18 front 255/45/18 rear IT SHALL BE!!!!!!!!!!!!!!!!!!!!!!!!!!

[dolamite]

i hate to keep draggin on about this, but my 2004 g sedan has a stock tire of 215/55/17. If i compare that to the new sizes i want 235/50/18 front and 255/45/18 rear, it throws the speed reading off much more.

2.8% too slow in the rear3.6% too slow for the front.

hmmmmmmmmmmmmmmm?