Samurai Posted August 27, 2011 Report Posted August 27, 2011 On my Mazda CX-7 SUV I have 255 50 R19 107w tyres. All city driving with speeds of upto 85 mph. What's the ideal tyre pressure to keep in all four? Thanks.
Pugwash Posted August 27, 2011 Report Posted August 27, 2011 Those sound like aftermarket rims. 2.2 bar would be be settings for the normal 60R18 tyres, and to be honest, that should do you fine too. http://www.tyre-pressures.com/ByCar/MAZDA/CX-7/5+DOOR+ESTATE+-+6+SPEED+MANUAL+-+PETROL/16V/2261/07+MAY
maxman Posted August 27, 2011 Report Posted August 27, 2011 This Is where I get all my tire Infomation,hope It helps. Mike
Nanuq Posted August 27, 2011 Report Posted August 27, 2011 Over time tires will tell you how they like your treatment. Just keep an eye on them. Middle of the tread wearing too fast? Overinflated. Sides wearing too fast? Underinflated. Cupping or scalloping? You have loose pivots in your suspension. Now run your hand across your front tire tread. Is it easier to push your hand across than to pull it back? Then your front end is likely toed in too much. Start with the sidewall pressure and then play with it. My 9.5x33-16 on the Rover beat me to death at their rated 85psi but dropping it to 55psi smoothes them right out. In deep snow 20psi is even better. Get to know your tires and vehicle and the tires will last longer too.
maxman Posted August 27, 2011 Report Posted August 27, 2011 Over time tires will tell you how they like your treatment. Just keep an eye on them. Middle of the tread wearing too fast? Overinflated. Sides wearing too fast? Underinflated. Cupping or scalloping? You have loose pivots in your suspension. Now run your hand across your front tire tread. Is it easier to push your hand across than to pull it back? Then your front end is likely toed in too much. Start with the sidewall pressure and then play with it. My 9.5x33-16 on the Rover beat me to death at their rated 85psi but dropping it to 55psi smoothes them right out. In deep snow 20psi is even better. Get to know your tires and vehicle and the tires will last longer too. I agree 100% very good advice Nanuq. Most people dont pay much attention to there tires. Not smart when you consider that your tires are the only part of your car that connect you to the pavement
Samurai Posted August 28, 2011 Author Report Posted August 28, 2011 Thanks everyone. Have pumped it to 32 (220) as of now.
chronoluvvv Posted August 28, 2011 Report Posted August 28, 2011 I was told that when you go aftermarket or pick a bigger size you add 2 psi per inch over the factory spec basically on 17s I'd run 30 psi but on 19s I'm running around 35
Samurai Posted August 28, 2011 Author Report Posted August 28, 2011 Hmmm...you don't get the feeling that the car is floating @ high speeds on 35?
krpster Posted August 28, 2011 Report Posted August 28, 2011 Based on Mazda specs 19" is available as an option. If they are OEM wheels then the tire pressure label on the inside of the driver door frame will tell you the pressure you should run.
Pugwash Posted August 28, 2011 Report Posted August 28, 2011 Based on Mazda specs 19" is available as an option. If they are OEM wheels then the tire pressure label on the inside of the driver door frame will tell you the pressure you should run. Um, yeah, but I'd assumed if this were the case, he wouldn't be asking us. Maybe that was a bit daft.
hiker01 Posted August 28, 2011 Report Posted August 28, 2011 Your Vehicle recommended tire pressure could be found on the driver side door panel post or on the door panel itself :
Samurai Posted August 28, 2011 Author Report Posted August 28, 2011 The stock tyres were 17" and I got them changed to 19".
hiker01 Posted August 28, 2011 Report Posted August 28, 2011 Sammy......is it true that Cars there are super expensive? I have read that a BMW 3 Series could cost over $100K after taxes/permits/license and everything? Wowsa!
chronoluvvv Posted August 29, 2011 Report Posted August 29, 2011 The stock tyres were 17" and I got them changed to 19". I'd hike up the pressure by 4 psi as long as the tire specs allow it
Samurai Posted August 29, 2011 Author Report Posted August 29, 2011 Sammy......is it true that Cars there are super expensive? I have read that a BMW 3 Series could cost over $100K after taxes/permits/license and everything? Wowsa! Expensive?....nah....they are bloody murder expensive here....plus..you get to own your car only for 10 yrs. If you want to retain it post that...you have to buy another license which costs a bomb (current going rate is about USD 53K). Here is what they are going for now (all inclusive price): # 318i - USD 158K # 320i - USD 178K # 325i - USD 197K
hiker01 Posted August 29, 2011 Report Posted August 29, 2011 $hitnerand.......I guess the lower and middle class don't drive.....although I get what the govt is trying to do.....control traffic and pollution! Might not be a bad idea.....problem is if more than half of the population are millionaires! Thanks......Btw: I had a great time my last visit.....
Samurai Posted August 30, 2011 Author Report Posted August 30, 2011 Hike... let me know when/if you plan to visit here next. Will grab a few drinks n show you a good time.
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now