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i was checking out some of those online calculators for tires wherein they ask for your stock tire size and then you input your new tire dims. aftwards gives you breakdown of all sort of variables such as speed loss, etc... question is : what is the widest patch/footprint tire that can be used on the Gen 5.5 on 17x7 +40? can one go higher than 225/55/17? without losing too much on the speedometer indicating 60mph, but vehicle is really moving at around 58mph... thanks.
for example calculator is located here: www.1010tires.com , also found this site for real good matching, plus sizing, offset info: http://www.discountedwheelwarehouse.com, prices not bad. rims and tires packages, free shipping, free mounting, free balancing.
__________________ Got the 50 on my jock cause my G-5 is so Hot...
Its not the width of your tires that changes your speedo, its the sidewall. However, the width of the tires and the sidewall are DIRECTLY related. The sidewall number is an aspect ratio of the width. So for example, a 215/50R17 tire will have a smaller sidewall than a 225/50R17. What you want is a tire thats as close to stock as possible. Keep in mind: the fact that the speedo changes a little also changes your milage. The fact that on your results, your speedo says you're going 60 while you're actually going 58 will mean that you will be putting extra miles on your odometer that you never actually drove. Oh, and also, the wider the tire, the more gas you use, and generally, the more expensive they are. My 215/50R17 are almost identical size to stock wheels... only .12% difference, which is basically nothing.
__________________ 2009 Audi TT 2.0T --- THE BEAST! 2002 LE 4Cyl --- Gone, but not forgotten. 06/28/09
Glaring blue HID bulbs are NOT classy, and don't make your car look nice, no matter what that kid in the Civic told you.
I plan to go with 235x50 for my 17x7 with +38 offset once my originals wear enough. Speedometer difference will be about -.15 mph. 225x50 will work fine too and will give about -1.1 mph error on the speedo. With +40 offset you won't have to worry about rubbing the struts unlike the +50 stock offsets. The extra 10 offset will give you about another 1/3" clearance from your struts. The 12 offset I'm using gives me almost 1/2" more clearance from my struts.
235/50 will work on a 7" rim. 235x45 will not. 235x50 tires accept rim width range of 6.5" to 8.5" due to the taller sidewalls. If you drop to a 235/45, the minimum rim width jumps to 7.5" with a max of 9". Been doing a lot of research on this as I do drive aggressively but do not want to give up on the comfortable ride that taller sidewalls give. I don't mind a bit of sidewall flex as long as the tires will grip if I get on a on/off ramp a bit faster than I intended.
a camry probably wouldnt need tyres anymor ethen 205 (race) or 215 (street)
not heavy enough to warrant phat tyres.
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125 front wheel horsepower with major retard issues between 4500-5200RPM -
OD switched off, even when not in 3rd results in major power loss/rpm drop.
The original question was asking what was the widest tire he could use without the speedo being too far off for the rims he had. I tailored my answer to fit his question. If I was going for looks, I would run lower profile tires that fit that rim size and have the speedo recalibrated. Should not cost too much for the speedo recal as long as you do not go to a Toyota dealer.
Its not the width of your tires that changes your speedo, its the sidewall. However, the width of the tires and the sidewall are DIRECTLY related. The sidewall number is an aspect ratio of the width. So for example, a 215/50R17 tire will have a smaller sidewall than a 225/50R17. What you want is a tire thats as close to stock as possible. Keep in mind: the fact that the speedo changes a little also changes your milage. The fact that on your results, your speedo says you're going 60 while you're actually going 58 will mean that you will be putting extra miles on your odometer that you never actually drove. Oh, and also, the wider the tire, the more gas you use, and generally, the more expensive they are. My 215/50R17 are almost identical size to stock wheels... only .12% difference, which is basically nothing.
la di da get 215's ifyou want better traction la la
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125 front wheel horsepower with major retard issues between 4500-5200RPM -
OD switched off, even when not in 3rd results in major power loss/rpm drop.
Haven't been able to find tires that are 225/40x17" so can't check rim width specs on it. 225/45x17" will take rims 7"-8.5" with measuring width at 7.5". You can get this info by looking at the specs for the tire at www.tirerack.com . Just do a tire search for the size you want, go to the specs for the tire and it will give you a chart with the info.
225 would give the best traction. traction is related to tire width. more rubber on the ground better traction.
traction is related to contact patch size and pressure on the road nob
215,225,235 all have contact patch sizes within about 5% of each other.
but the less tyre width you have the MORE tyre pressure you have, letting the tread dig into the tarmac and not just ly on the top surface, giving you more grip.
there IS a limit to how much pressure you can have before the tyres go over their limit (understeeeeer) but with good tyres these days that limit is way way past the limits of the standard suspension, ie, your suspension will make you understeer before your tyres do.
remember the btcc series? where they ran a 300hp camry? all of those cars rain 18x7" wheels with 205 tyres. 205 becuase racing rubber is even better then road rubber, so they get away with a skinnier tyre to increase pressure to increase grip levels.
because of the less pressure, youre also more prone to aquaplaning (when you dont get grip at all in the rain becuase ya tyres just gripping to the water surface, becuase there isnt enough PRESSURE to get the tyre down).
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125 front wheel horsepower with major retard issues between 4500-5200RPM -
OD switched off, even when not in 3rd results in major power loss/rpm drop.
TerraForce, thanks bud for the feedback. i will roll with 235/45/17 for now. then later upgrade to 18" rims by end of year. what's your take on rim 17/7 verus 17x7.5 in relation to plus sizing?
__________________ Got the 50 on my jock cause my G-5 is so Hot...
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Widest tires on 5.5
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