I'm sure it's been asked. I've looked for the answer here and can't find but I'm in a frenzy. In a hurry and buying these tires locally before someone else buys them. I have a 2004.5 350z needing tires, especially the rears. Currently, the car has 245/45/18 all around. Set I want to buy is (4) 245/40/18. From what I can find on the net, these should work with out any issue and I don't need anything else to make these work?

Thanks.

 

Here is a neat link I just found. I've answered my own question. I should be fine.

http://www.discounttire.com/dtcs/infoTireMath.dos

 

245/40/18: You have decreased chassis ground clearance by 12.25 mm.
Actual speed 100 MPH. Speedometer will read 103.7 MPH.
Is this a smart idea?

 

If you have 245/45 all around with no rubbing then you will have no issues with 245/40 because they have a smaller sidewall.

 

If I'm saving a $1,100 - yea. Reason why I jumped over the sale. I'm not to concerned about .4822". Using the link above all the calcs are the same as yours except the mph is different.

 

lol at 245 rubbing, you have to be kidding me!


Read this thread:

https://my350z.com/forum/2003-2009-n...questions.html

Your question would have been answered within it here:

https://my350z.com/forum/2487452-post8.html