B C Posted January 18, 2013 Report Share Posted January 18, 2013 (edited) 10K front, 12k rear? Should be the otherway around. higher spring rates in the front, lower rear. Unless stuff is Different in Subaru WRX STi's. But I doubt that. I've been doing a ton of research on this for e30's and for some reasons all of them have lower spring rates in the front. Do not know why. My springs are 315 lb/in front 570 lb/in rear. The rear springs are stiffer because of the leverage involved in the trailing arm rear suspension design. If you go to a coilover design that relocates the spring onto the damper, then you need to reduce the rear spring rate to achieve the same balance (without doing the calculations I would estimate that I would need to go down to a 380-410 lb/in rear spring for example) A 240sx for example, typically has equal or stiffer front springs than the rear (if my memory serves me properly this morning) due to it having a multi-link rear suspension where there is little to no leverage in the suspension links that would require stiffer springs than normal. Edited January 18, 2013 by Snap Understeer Quote Link to comment Share on other sites More sharing options...
Brian. Posted January 18, 2013 Report Share Posted January 18, 2013 Jake, what tire and rim setup are you using by the way? I'm thinking about doing a 15x8. I can have some decent grip and also a bit more tire to keep it cheaper. Also, are you okay with all this thread derailing? Haha No such thing on Wibimmers. Quote Link to comment Share on other sites More sharing options...
StewCrew Posted January 18, 2013 Author Report Share Posted January 18, 2013 10K front, 12k rear? Should be the otherway around. higher spring rates in the front, lower rear. Unless stuff is Different in Subaru WRX STi's. But I doubt that.Idunno subaru motors work sideways so who knows. The BC's come stiffer in the rear, and for the most part I thought most coilovers come stiffer in the rear? But I wanted the car to feel super tight so I got higher rates, and it definitely does. If this thing isn't on the fucking GROUND when I see it. I'll be dissapointed in you Jake.If these "m50 into e30 chasis" mounts let the motor sit ever so slightly higher, then yes, shit will be dropped. If they dont, shit will also be dropped. Quote Link to comment Share on other sites More sharing options...
Brian. Posted January 18, 2013 Report Share Posted January 18, 2013 Idunno subaru motors work sideways so who knows. The BC's come stiffer in the rear, and for the most part I thought most coilovers come stiffer in the rear? But I wanted the car to feel super tight so I got higher rates, and it definitely does. Idk man, S13 coils are the same way, stiffer front slightly lesss stiff in the rear. I'd assume due to fat ass engines. But hey, potato. If these "m50 into e30 chasis" mounts let the motor sit ever so slightly higher, then yes, shit will be dropped. If they dont, shit will also be dropped. Dropped or dropped. I like it. Me too. I bottom out everywhere (my oil pan and new bumper) So I'm right along with you babe! Quote Link to comment Share on other sites More sharing options...
StewCrew Posted January 18, 2013 Author Report Share Posted January 18, 2013 Jake, what tire and rim setup are you using by the way? I'm thinking about doing a 15x8. I can have some decent grip and also a bit more tire to keep it cheaper. Also, are you okay with all this thread derailing? HahaThread derailing? Not giving a fuck man Im hopefully helpin you out with your future setup so its all good. The sportmaxx in the pic I just uploaded were 15x8 on a 195/45 tire I believe? The car was scrapping everywhere. It was great. But I sold those and now have these: These are 17x7 with 20mm spacer up front (205/45) and 17x9 with 5mm spacers in back (215/45). Goodyear Eagle GT's all around. These are for cruising/meets/not drift day. I just run all spares for drift days. \m/ Quote Link to comment Share on other sites More sharing options...
Rowleym Posted January 18, 2013 Report Share Posted January 18, 2013 Those 15x8's look great! I need a skid plate for sure.. Quote Link to comment Share on other sites More sharing options...
Brian. Posted January 18, 2013 Report Share Posted January 18, 2013 Those 15x8's look great! I need a skid plate for sure.. Naw. Quote Link to comment Share on other sites More sharing options...
StewCrew Posted January 18, 2013 Author Report Share Posted January 18, 2013 Those 15x8's look great! I need a skid plate for sure.. Yeah I liked them, but eventually got bored and they were too small for my taste. I love how the staggered 17s look and glad I stepped up in wheel size. Quote Link to comment Share on other sites More sharing options...
StewCrew Posted January 18, 2013 Author Report Share Posted January 18, 2013 My springs are 315 lb/in front 570 lb/in rear. The rear springs are stiffer because of the leverage involved in the trailing arm rear suspension design. If you go to a coilover design that relocates the spring onto the damper, then you need to reduce the rear spring rate to achieve the same balance (without doing the calculations I would estimate that I would need to go down to a 380-410 lb/in rear spring for example) A 240sx for example, typically has equal or stiffer front springs than the rear (if my memory serves me properly this morning) due to it having a multi-link rear suspension where there is little to no leverage in the suspension links that would require stiffer springs than normal. The ways of the e30 explained. This is good info! Thanks Quote Link to comment Share on other sites More sharing options...
Rowleym Posted January 18, 2013 Report Share Posted January 18, 2013 I might step it up to a 16, but I feel like keeping them smaller would be lots cheaper for tires, and when you drift, you definitely use tires. Quote Link to comment Share on other sites More sharing options...
StewCrew Posted January 18, 2013 Author Report Share Posted January 18, 2013 I might step it up to a 16, but I feel like keeping them smaller would be lots cheaper for tires, and when you drift, you definitely use tires. Right. Which is why I have 12 spares right now. Can never have too many spares Quote Link to comment Share on other sites More sharing options...
Brian. Posted January 18, 2013 Report Share Posted January 18, 2013 I might step it up to a 16, but I feel like keeping them smaller would be lots cheaper for tires, and when you drift, you definitely use tires. Just an FYI, if you're going to drift, go to a junkyard like gibsons in neenah, buy their shitty used tires, for $10 a pop. or buy new starfires. Those will last you plenty of drift days. Starfires last for eva Quote Link to comment Share on other sites More sharing options...
StewCrew Posted January 18, 2013 Author Report Share Posted January 18, 2013 Just an FYI, if you're going to drift, go to a junkyard like gibsons in neenah, buy their shitty used tires, for $10 a pop. or buy new starfires. Those will last you plenty of drift days. Starfires last for eva ^ this. Junkyards are the best for spares Quote Link to comment Share on other sites More sharing options...
Earl Posted January 18, 2013 Report Share Posted January 18, 2013 I might step it up to a 16, but I feel like keeping them smaller would be lots cheaper for tires, and when you drift, you definitely use tires. I think 16" tires are cheaper than 15"... Quote Link to comment Share on other sites More sharing options...
Rowleym Posted January 18, 2013 Report Share Posted January 18, 2013 I think 16" tires are cheaper than 15"...Really? I feel like 15 inch is more common right? Wouldn't I find more 15" tires off like Hondas as a junk yard? Quote Link to comment Share on other sites More sharing options...
Brian. Posted January 18, 2013 Report Share Posted January 18, 2013 Really? I feel like 15 inch is more common right? Wouldn't I find more 15" tires off like Hondas as a junk yard? It's a toss up. 16" tires NEW are cheaper, in like a 195/55/16, but if you want cheap an shitty, to destroy on drift days/back road fun, go 15's. Quote Link to comment Share on other sites More sharing options...
Rowleym Posted January 18, 2013 Report Share Posted January 18, 2013 Yea that's what I'm thinking. What do I get like 60 thick or 55 or something? Quote Link to comment Share on other sites More sharing options...
Brian. Posted January 18, 2013 Report Share Posted January 18, 2013 For drifting? well, wait till you get your rims. Because that'll really depend on what you want, especially if you're gunna go low, you're gunna have to stretch your tires, due to cambering in. Quote Link to comment Share on other sites More sharing options...
StewCrew Posted January 18, 2013 Author Report Share Posted January 18, 2013 Yea that's what I'm thinking. What do I get like 60 thick or 55 or something? What wheels are you thinking of going with anyway? Quote Link to comment Share on other sites More sharing options...
Rowleym Posted January 18, 2013 Report Share Posted January 18, 2013 I'm thinking any cheap light 15x8 et 0 rims. Definitely stretching the shit out of them. Most civics are like 6.5 rims, so I'll be using like a 195 or 185 or something. I can't figure out what rims I want yet. Suggestions? Quote Link to comment Share on other sites More sharing options...
Brian. Posted January 18, 2013 Report Share Posted January 18, 2013 et0? You can't just throw out offsets. from what I recall E30's have a factory high offset, so you're going to mexipoke like a mexicano. Quote Link to comment Share on other sites More sharing options...
B C Posted January 18, 2013 Report Share Posted January 18, 2013 XXR and ESM seem to be the best style+fitment per dollar wheels you can get new. I still need to sit down sometime and figure out the best size of wheel + tire that allows for best tire availability and cost/performance ratio for track tires. I will probably do something close to 16x8 or 17x8 with summer tires for daily use. Either way, the wheels need to be light and strong. The Kosei K1 and TRM C1 wheels seem to be budget lightweight track wheel if light weight is important to you. Quote Link to comment Share on other sites More sharing options...
Rowleym Posted January 18, 2013 Report Share Posted January 18, 2013 Like this? Quote Link to comment Share on other sites More sharing options...
Brian. Posted January 18, 2013 Report Share Posted January 18, 2013 US factory offset E30's came with lowest offset of +30. averaging +33/40 offset. So +0 offset will be a stretch. but go for it. Hell, I can't really talk, I'm looking for 16/17x10 +5 offset wheels... Quote Link to comment Share on other sites More sharing options...
Rowleym Posted January 18, 2013 Report Share Posted January 18, 2013 Stretch indeed! I would love to fit some 16x10's or something close to that, but I don't think I need that kind of grip for drifting yet.. Wheels are definitely reasonable now a days. Quote Link to comment Share on other sites More sharing options...
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