YABABY IS FLYING HIGH...received RS-1 #377, stick, from Sean at Koon's Toyota on Tuesday. Gray dot graphics, 19" TRD, cold air, short shift, Altezza tail lights, and bB side window wind shields (took on plane as baggage fm Tokyo) found in "Super Auto Bacs" (like "Pep Boys" but with an edge to customizing) in Tokyo. Problem is: what the right air pressure for these TRD 19" wheels with 225/35/19 Pirelli PZero Nero tires. My man at CARTOYS, Annapolis, says he'd recommend I carry 50PSI/ repeat Fifty Pounds Per Square Inch air pressure to guard against wheel breakage in potholes. The distance from the rim to the pavement in the TRD 19" wheels is about 2 inches. These tires cost $219 from TIRERACK before installation and would not like to see premature center-tread-tire-wear....but on the other hand...a broken wheel louses up my day too. Shaddy, at CARTOYS, said he's got the same size wheel and knows that he can even carry upwards of 54-55 PSI on a long summer's drive and know the tire's good for it. Thoughts?

Also, talking about tire pressure and low profile tires, the TIRE MINDER folks that provide these valve stem devices to the BROOKSTONE chain of stores...that pop-up from green to yellow to red in the cap if you're low on pressure...said they'll be coming out with 50PSI maybe by summer...testing now...and only have 40PSI tops.

YABABY
in
Annapolis, MD

 

if you look on the side wall it will state the max psi with is usually around 40 or 44, but will vary by tire brand

 

I can't wait to see pictures of those side window shields on your new toy! Congrats!

 

Thanks for the interest....

I did read the tire warnings and did a doubletake with the local Subject Matter Experts at CarToys in Annapolis. I was assured that the 50 PSI recommendation for 222/35/19 Pirelli PZero Neros was based on experience and a strong desire to avoid a broken wheel. I respect that more than what the company puts on the side of the tire to protect their asses.

Anyway...the ride is fine. One tire leaked, Car Toys said take it Mr. Tire and they found a 2 1/2 inch piece of the bead broken (looked ragged and ugly, was surprised I ONLY lost 10 PSI in 24 hours) but am assured by Sean at Koon's Toyota that TRD will replace the tire. Mr. Tire glued the tire and rim together with a lot of black crap which is working for now...but consider this a temporary fix. For the TRD 19's, Toyota mount the Pirelli 19's to their TRD rim and balances that before shipment...so that broken bead (the thin down part of the tire rim that meets the wheel) was definately their bad.

Any one else out there running their 19's on 50 PSI....????

The TRD 19's only lightly brush the wheel well plastic inserts on lock-to-lock turning...like parking lot slow speed stuff....no problem for me.

YABABY

 

Wanted to become even more efficient on MPG, so I thought, ah yes, don't forget your tires.

My 18" Pirelli's read 50 PSI. Whew, I thought; that seems high. But tried it anyway.

They were all "around" 30-34 previously.

And after one tank of gas, what horrible gas mileage! Which is counterintuitive because you'd think more air would mean a little better. I know, I know: consider all variables, but I actually did not run my a/c this tank AND my driving habit on this tank borderlined ritualistic compared to previous tanks. So no real change in pace, distance, city vs highway and all that other hoo haa.

Interesting...

 

I bought 16" Konig rims at a motorsport store about 10 months ago, and they advised me to run 40 lbs all around on my Toyo P4s (205-45-16).

A few days ago, I so happened to go to the Toyo Tires official web site, and posed the question as to what is the correct tire pressure for these low-profile tires.

The response was 'AT LEAST 33 lbs' ---in a follow-up email I asked 'ok, at least 33 lbs, but what about 40 lbs what the rim/tire dealer advised'--their response: 'TOO HIGH'.

What are other SL members filling up to?

 

there is no need to put more than 38-40psi in ANY tire
the higher perssures should correspond to load amount

this is a 2400lb vehicle...19's on bigger/heavier cars only run psi in the 30's

there will be no increase in MPG by OVERinflating your tires
the sidewall numbers are the tires maximum and should not be used for daily driving

it comes into "contact patch" too much pressure and the tires center will push out more than the sides and create a crappy ride and lower MPG

hope this helps

 

FYI, if you are serious about monitoring your tire pressures, you might want to check this out!

SMARTIRE Tire Pressure Monitoring System

Monitoring their car's tire pressures has allowed the world's top race teams to achieve peak performance and analyze potential tire problems before low air pressure could cause an accident or strand their driver by the side of the track. Their tire pressure monitoring system provides the early warning that allows them to correct simple problems before they become catastrophes.
Today you can have that same type of information in your vehicle with the 2nd Generation SmarTire Tire Pressure Monitoring System. While it continues to serve as an early warning device that continually checks tire pressure while the vehicle is being driven, the 2nd Generation System is even more adaptable than the original system to better meet the needs of more vehicles. SmarTire Pressure Monitoring Systems alert drivers to small air pressure leaks, before they can become big problems.

So whether you drive around town, on the highway, or at the track, the 2nd Generation SmarTire System will warn you of air pressure loss. Additionally, tire pressure monitoring systems help ensure that you drive on properly inflated tires thus maximizing performance, fuel economy and tire life. And this system can even help protect low profile tires mounted on large diameter wheels by identifying a drop in air pressure long before it becomes visually apparent.

The wireless tire air pressure sensors/transmitters weigh less than 1.5 oz. and are accurate to ±1.5 psi. Straps that accommodate 13" to 20" diameter wheels are used to securely band a sensor to each wheel before the tires are installed. The sensors/transmitters are equipped with motion detectors that turn them off when the vehicle is parked to prolong their lithium batteries' life (estimated at more than 5 years of normal vehicle use).

The system's receiver/display unit is placed within reach and sight of the driver. Within the first minute of driving, the system's sensors will broadcast a signal to the in-car receiver to confirm they are operating correctly. The receiver/display features a 12-volt power cord that can be plugged into the cigarette lighter or hardwired directly to a "keyed" power circuit.

The Basic Display System is capable of monitoring four tires and provides early warning of tire pressure loss while the vehicle is being driven.

The compact receiver/display (shown at left) mounts easily to the dash, windshield or center console. No programming is required, just plug in the power cord and the receiver is ready to go. The Basic Display System identifies each tire by its color code (a color coded sensor/transmitter is banded to each wheel along with a matching color coded "washer" that is attached to the tire valve).

If a tire’s air pressure drops to 22 psi, an LED on the display will turn red to identify the problem tire. The vehicle can be pulled to a safe location and the tire associated with the color adjacent to the red LED can be inspected. If air pressure continues to drop to 18 psi, the second level warning will activate an audible alarm and the LED will flash red.

The 2nd Generation SmarTire Tire Pressure Monitoring System is backed by a one-year/unlimited mileage manufacturer's warranty.

Optional displays and adapters (see list above right) available to fine-tune the system for your vehicle.

http://www.tirerack.com/accessories/.../smartire2.jsp

If you have additional questions, or would like personal service, please feel free to call. I am at the Tire Rack for 10 hours everyday, Monday through Friday and every other Saturday. If ordering on line, please feel free to enter my name in the "Previous Contact" area towards the end of the order, and I will be glad to keep an eye on the order for you and keep you up-to-date!