I just got my RT615's mounted, I'm running the stock 35F/33R tire pressure, the problem is they feel real squirrley and almost as if the sidewalls are made of pancakes. They grip like no other although I can't find the happy median in regards to pressure.

What are some of you running (on the street) for tire pressure on the RT615's? (15" wheel)

 

im usually between 35 and 37 psi.

I think the squirrleyness comes from the wider tire and a not ider wheel.

Your running 205/ 50's right?

Falken makes a good bang for the buck tire.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ITR640 &raquo;</TD></TR><TR><TD CLASS="quote">im usually between 35 and 37 psi.

I think the squirrleyness comes from the wider tire and a not ider wheel.

Your running 205/ 50's right?

Falken makes a good bang for the buck tire.</TD></TR></TABLE>

Yeah 205/50's

Are you running 35-37 on all four corners??

 

I always liked 40/30, f & R, respectively. Hot and cold. On a 6.5 inch wheel, the 205/50 is going to sacrifice some response compared to 195/55 or so tires on the market.

I never gave it much thought cause I was usually coming out of apexes with my hair on fire.

 

when i drive on the street with my RT's i had them at 40psi all around. They seemed fine with zero "squirrellyness". This was on a 7" rim however, which would make a signifigant difference compared to a stock 6" wide wheel.

 

if you are using the stock wheel, thats the reason they feel mushy. I HATED the 205/50 azenis on my stock wheels. I upgraded to a 6.5" wheel and it was night and day difference. The 205/50 fit perfectly on a 6.5" wheel. it made the tire feel much more grounded and responsive without running really high pressures.

 

I had these tires, at 40 PSI on my stockies, no issues.

 

Switch to a 7" wide rim. In the meantime just keep inflating your tires a few pounds at a time until it becomes tolerable. FWIW, I didn't notice much of a problem with them on my stockers.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Doostur &raquo;</TD></TR><TR><TD CLASS="quote">I had these tires, at 40 PSI on my stockies, no issues.</TD></TR></TABLE>

40 on all 4 corners???

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by get RIGHT &raquo;</TD></TR><TR><TD CLASS="quote">Switch to a 7" wide rim. In the meantime just keep inflating your tires a few pounds at a time until it becomes tolerable. FWIW, I didn't notice much of a problem with them on my stockers.</TD></TR></TABLE>

I'm going to be selling in a few months so the 7" wide although a good idea, probably isn't going to happen. I'm gonna give 40/38 a whirl and see how it works out

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Doostur &raquo;</TD></TR><TR><TD CLASS="quote">I had these tires, at 40 PSI on my stockies, no issues.</TD></TR></TABLE>

That's the set I bought, foo. I ran them at 38 psi for the street (but only drove maybe 100 miles on them on the street) and 38 fr, 40 rr auto-x.

 

I ran 42, 35 in RT-615's for AX and street on 15x6 rims - 40 was a bit low for AX and I like to run AX pressures on street... Had pretty good steering response.

I run 37, 34 with 15x7's with excellent steering response.

 

I'm surprised by how many are running identical psi for front and rear, wouldn't it make more sense to run a lower pressure in the rear due to the weight differential?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RGoose18 &raquo;</TD></TR><TR><TD CLASS="quote">I'm surprised by how many are running identical psi for front and rear, wouldn't it make more sense to run a lower pressure in the rear due to the weight differential?</TD></TR></TABLE>

remember weight differential is based on the car standing still. when you are acclerating the weight is transferred to the rear so tire pressures are based on a lot of other things as well. sway bar settings, suspension settings, camber/toe settings, drive preference, etc.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RTW DC2R &raquo;</TD></TR><TR><TD CLASS="quote">if you are using the stock wheel, thats the reason they feel mushy. I HATED the 205/50 azenis on my stock wheels. I upgraded to a 6.5" wheel and it was night and day difference. The 205/50 fit perfectly on a 6.5" wheel. it made the tire feel much more grounded and responsive without running really high pressures.</TD></TR></TABLE>

I had exactly the same experience. Compared to the stock RE010 the steering feel with 205/50 azenis is poor. It's like driving with soft sidewall snow tires but the grip was still great. I never went over 37psi though.

That was on stock size wheels. Once I got the azenis mounted on 15x7 slipstreams I had no issues with mushy feeling.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RTW DC2R &raquo;</TD></TR><TR><TD CLASS="quote">

remember weight differential is based on the car standing still. when you are acclerating the weight is transferred to the rear so tire pressures are based on a lot of other things as well. sway bar settings, suspension settings, camber/toe settings, drive preference, etc. </TD></TR></TABLE>

So with that being said, what would you recommend for a DD in regards to pressure?, obviously all these principals still hold true although you seem to be speaking from more of a performance standpoint (i.e. auto-x, HPDE's). Not just clunking around town from A to B. My school of thought is if Honda recommends lower pressure in the rear for DD then that's probably the way the vehicle was designed and put simply....the way it should be, no?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RGoose18 &raquo;</TD></TR><TR><TD CLASS="quote">

So with that being said, what would you recommend for a DD in regards to pressure?, obviously all these principals still hold true although you seem to be speaking from more of a performance standpoint (i.e. auto-x, HPDE's). Not just clunking around town from A to B. My school of thought is if Honda recommends lower pressure in the rear for DD then that's probably the way the vehicle was designed and put simply....the way it should be, no?</TD></TR></TABLE>

I don't recall exactly what the manual calls for, but Honda threw that out to the "general public." When you lower the rear tire pressure, it will induce more understeer, which is safer for most average drivers. This is why most cars come understeer prone from the factory.

The best thing is to just try out different settings and go with what you like. But for the streets, I wouldn't think it would matter much.

 

They call for lower pressures on the street for 2 reasons. 1. Lower press = a softer ride and less bone jarring. Most prefer this. 2. To avoid the possibility of a blow out when you run into a pothole or curb because the tires won't budge from overinflatrion.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RGoose18 &raquo;</TD></TR><TR><TD CLASS="quote">So with that being said, what would you recommend for a DD in regards to pressure?, obviously all these principals still hold true although you seem to be speaking from more of a performance standpoint (i.e. auto-x, HPDE's). Not just clunking around town from A to B. My school of thought is if Honda recommends lower pressure in the rear for DD then that's probably the way the vehicle was designed and put simply....the way it should be, no?</TD></TR></TABLE>

I think the pressures recommended by Honda are a great starting point in the absence of other information. That's where I generally start out, and then adjust from there in 2 psi increments as needed for performance/grip, ride comfort, even treadwear, etc.

Honda does a pretty good job recommending pressures. They do so with the objective of performance (grip and neutral handling), for their performance-oriented cars, and ride comfort (and perhaps a tad of understeer), for their family-oriented cars. That's why their recommendations for cars like the ITR (35F/33R) and NSX (33F/40R) are pretty darn good for maximizing performance on the stock tires for street use. That's also why they recommend lower pressures for their family cars; IIRC, the base model Integra recommends something in the high twenties or thereabouts, whereas the GS-R and ITR are the higher 35/33.

Of course, if someone here recommends a particular pressure for the Azenis, and you think what they say makes sense, by all means you can try that pressure out first. After all, pressure is easily adjusted. So you can try out a given set of pressures, and if you don't like them, then try something else. I suggest keeping track of your pressures when playing with them, and don't forget that they will be different when measured cold (when the car has been sitting for hours, not in the sun) vs when measured hot (when the car was recently driven). Also pressures are higher when ambient temperatures are hotter, so you'll want to consider adjusting for that as well; the Tire Rack says 1 psi for each 10 degrees F, so if you measure them in the morning when it's 40F out, and it warms up to 70F, they'll be around 3 psi higher, cold, without doing anything.

 

Very informative as always nsxtacy

Thx for all the replies

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RGoose18 &raquo;</TD></TR><TR><TD CLASS="quote">

40 on all 4 corners???
</TD></TR></TABLE>

Aye Sir! Just for autocross days though. Usually right at 38-40.