Dave502

This is my first post on C7 Forum, Selling my C6 GS and getting a 2015 C7 this week....Run Michelins on C6 but the C7 has brand new Nitto 305/30 ZR 20 and 275/35 ZR 19 on it....Going to make about a 200 mile trip with it and wanted to start with correct air pressure to try and get as many miles out of these before switching back to Michelins....Can someone help?

2K14C7

30 psi cold.

fredmills

Why do so many people have a problem with factory recommendations. I guess they are graduate tire engineers.

Dave502

Wow...called Nitto yesterday,they said 33 to 35....since you know it all what is your factory recommendation just because it is recommended doesn't mean it's right.There is always one in every crowd...Evidently your the one

dvilin

Have to agree with 30 psi cold.

23/C8Z

can't go wrong with sticker.. however you could probably go wrong if the tire is inflated beyond and end up a terribly bouncy ride over bumps and worst case a bent or cracked wheel?

these are non RF? not sure if they're recommending more psi because of less stiff sidewall maybe?


^^^^^^^ if you think that's something wait until you meet the C5/6 trolls in here. don't have the car but will gladly tell you what you're doing wrong and what junk it is lol...

Welcome, aboard. former C6 owner here. C7 is what it should be, way better in every way than the gen before it!

jimmie jam

Unless you are looking for a "truck type" ride, even on smooth roads - 30 psi. I've tried all the rest and now stick with the best...30. Blow them up and take a drive - then put 30 in and do the same drive................................... ......report back.

RF is what I'm talkin bout here. Even 1 psi makes a difference.

fredmills

[QUOTE=Dave502;1595155325]Wow...called Nitto yesterday,they said 33 to 35....since you know it all what is your factory recommendation just because it is recommended doesn't mean it's right.There is always one in every crowd...Evidently your the one[/QUOTE

So sorry. Didn't know you had contacted Nitto - #1 tire company. Wonder what percentage of Corvettes have Nitto's installed. FYI. The word in your last sentence should be "you're", not your.

Michael Hunter

What gets me about factory recommended tire pressure is the same size tire fits many different makes and models. Why would you put the same amount of air in the front and rear when the front weighs so much more than vehicles like Vans, Trucks, Lg. Sedans? I regulate my tire pressure to the foot print of the tire. If a tire is over inflated it will wear in the middle because the outer part of the tire isn't touching the surface. Too low of pressure will wear the outer edges and will give you pour mileage in gas and tire life. 30 P.S.I. is a good starting point but you should adjust to the weight of the vehicle. There are so many factors to consider for tire wear. Frt. tires will wear slightly more on the outside from cornering. This is just my 2 cents. Don't get me wrong I feel tire pressure is important for tire life and control but 200 miles isn't going to make a difference unless the tire is very low. If you want good mileage put 35-36 lbs. cold, but you will find your tire wearing in the center.

2K14C7

Isn't the weight of the C7 the same front or rear??

Thunder22

C7's are 50/50 weight distribution.

sTz

^^^ This...

30 psi in all 4 has worked for me...

Power Hawk

30 psi is factory recommended. Higher psi results in rougher ride and less traction. Lower psi results in overheating tires.

fredmills

Wonder how you are calculating footprint - you don't have the equipment of expertise to do that.

vettnutt

When did Corvette's start coming from the factory with Nitto tires? Mine came with Michelins and factory recommends 30 psi cold in those. The factory recommendation for Nitto's is 30 psi also?

Drive_Sell_Win

Everyone is giving good advice, but it's hard to trust the Internet when the answer is actually on the tire.

JaxC7

The only pressure indicated on the tire is the max inflation pressure for the tire to carry it's maximum rated load, not the proper pressure for the vehicle that the tire is mounted on. That's why the manufacturer has a sticker on the car with the proper inflation pressures.

vettnutt

That sticker doesn't mean much unless OEM tires are mounted.

JaxC7

Also true.

bjones7131

I have read that GM recommendations of 30 psi is partially influenced for the fuel consumption. I run 28-29 cold, when they heat up which is pretty quick they are at 32-33. I get a softer ride at the press. I mentioned. As for the forum replies, lot of comedians, knot heads, and english/spelling majors lurking on here. Ignore them and post and reply away.