Falken RT615 225/40/18 reinforced - best PSI?

[bacarl]

Here's one for you Mid_Life, to make myself look like more of an idiot... How do you read those tables on Falken's site??

They say your Azenis 225/40-18 has a load rating of 92. The MS3 weighs in around 3200lb with a 60/40 weight dist. That puts 1920 up front and 1280 in back. Looking at the 92 row on the reinforced chart, 1280 is roughly 38psi, and 1920 is off the chart (>42psi). I'm retarded, so can you please explain how you read that chart to arrive at your 41/39? Are the numbers listed not front/rear weight splits? Corner weights make even less sense.

 

[happy and angry]

Aren't those max load numbers per tire? So our 60/40ish weight split of ~1900 and ~1200 are split up between two tires each, each with a max load of around ~1300 pnds?

So at the front it's 2600 pounds max load, and same at the back, which is enough for a 4300 pound Mazdaspeed3, which is about 300 pounds more than the maximum load for the vehicle.

Problem is to approach "max load" capacity on the tire, you're supposed to run it with higher pressure. Check here to see: http://www.tirerack.com/tires/tiretech/tirespecskey.jsp#maxload

 

[Mid_Life_Crisis]

Here's one for you Mid_Life, to make myself look like more of an idiot... How do you read those tables on Falken's site??

They say your Azenis 225/40-18 has a load rating of 92. The MS3 weighs in around 3200lb with a 60/40 weight dist. That puts 1920 up front and 1280 in back. Looking at the 92 row on the reinforced chart, 1280 is roughly 38psi, and 1920 is off the chart (>42psi). I'm retarded, so can you please explain how you read that chart to arrive at your 41/39? Are the numbers listed not front/rear weight splits? Corner weights make even less sense.

Don't feel stupid. I couldn't make heads or tails of that particular table either. I had to circumvent it. The site does not list the RT615 as being available for our cars, probably because the stock rim is considered to be too narrow for it. I found a different tire that is reinforced and rated for our car and has the same load rating. The page that came up said to run 41/39.