Anyway to calculate amount of camber needed? I'm switching a set of wheels and the specs are a bit more aggressive than my last set, so I'm wondering if anyone out there would happen to know how much extra negative camber I need to run it without rubbing? My previous set was 18x8 +22 front and 18x8 +27 rear on 215/40/18 tires. The next set I'm looking to get might be 18x9 +25 front and rear, and according to 1010tires' offset calculator the new front will be 10mm more out and the new rears will be 15mm more out. I still plan on running 215/40 tires on it. Right now I have just enough room to clear my current set of wheels on big dips, with only 2mm or so to spare for the front and around 3mm to spare for the rear. My front camber is at -0.8 and rear is at -2.8. All camber parts are stock, and I have two sets of camber bolts for the front and may get a pair of sliders for the rear. Does anyone know how much negative camber I need in order to run it without rubbing, or is this something I have to find out myself through trial and error? Would 205 tires be too much of a stretch and look ridiculous on 18x9 +22? EDIT: Never mind, I found some 18x9 +35 wheels so I won't have to adjust very much :) |
trial and error? :lol |
there's way too many variables for anyone to make an exact guess, things like tire brand certain tires run larger or smaller than true size, then offcourse your spring rates and dapmening settings depending on how soft or hard your coilovers are set too and a few other things.... just put them on, see where it rubs then take it from there, you can get stretched tires, stiffen up your suspension, or more camber, etc...... |
I was hoping it would be a bit simpler because the only thing that's changing (that matters) is how much further it sticks out, since my suspension won't be changing so the stiffness and dampening settings would be the same. I'm also planning to run the same tires on them if it helps? |
yea, no, its as simple as test fitting first then see where you are with it, only way to really tell |
the possibilities are... .. wait for it... Limitless |
A degree will probably buy you about 5mm. Going from 1 degree of camber to 3.5 made my rear wheels go from retardedly bad fitment, to near perfect fitment. Also, if you are running the same size tires, they will stretch more on a 9, so the side all curvature will match the fender shape more as well. But I'd suggest going to a 215/35 if you really want to guarantee some room, or a 205/40. You can find 215/35s for cheap as hell though. |
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I run 215/35s on my car, and though people are scared often to downsize sidewall because of a harsher ride, when you are riding on coils spun all the way to the bottom, with camber, on stretched tires, how much worse is your ride quality really gonna get?:suspicious: Personally I'd rather have my tires cause a firmer ride than have them smash my fenders constantly if thats what it comes down to. What wheels are you looking at? |
You're putting 215's on a 9.5?! :suspicious: thats an insane amount of stretch... I know it has no ill effect when daily driving, but your sidewalls are pushed to its limits at this point. I'm already pushing it putting 255's on a 10.5. |
this is how much you need: /___\ :) |
The closest thing I know of to what you're looking for is willtheyfit.com, but overall it's more about trial and error than anything. |
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also, it will cause the overall shape of the tire to deform slightly, acting similar to an over inflated tire... reducing contact patch.... |
215s on a 9.5 is fairly large stretch, however he said he is now planning on running a 9 anyways. I have run 205/40/16s on 16x9 on my old car. It was never an issue, and my stretched 205 t1r had a hell of a lot better grip than my 205/50/15 michelins on a 15x6. Its all subjective to what the person wants for their car. |
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it WILL affect day to day... if it rains, a smaller contact patch and more bouncy ride = higher probability of loss of traction, and also i would think it would increase the effects of aquaplaning ... |
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Well it's going on a hybrid so performance isn't an issue.. haha. I had 225/45 on my old 17x9 rfp1's and I felt like I wanted more of a stretch. I'm going with 215/40 on the 18x9 I'm getting, compared to my old wheels which were 18x8 so I think the extra stretch mighttt make up for the extra 5mm poke? My gf is already complaining that the ride is harsh haha so I would like to stay away from 35 tires. My coilovers aren't all the way to the bottom, still have around 2 threads left in the rear and a whole lot in the front lol. I'm looking at white Varrstoens |
You don't need to trial and error if you get all the measurements.. it is simple geometry.. it is just getting the measurements are rather tedious for someone without a lift... but it is still doable. Get the measurements put everything together in sketchup... you can make pretty good estimations that way. |
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