4g rims on a 2g

[DubV]

I just bought the 18 x 8 rims off a 2006 Eclipse GT. I know that there aren't going to be any fitment problems but there may be problems with rubbing. The stock tires for the rims are 235/45-18 but this is going to cause rubbing problems and throw off my speedo by about 5 mph. I've seen people that have bought these rims for a 2g put 225/40-18 on them and they don't have any problems. My questions is should I get the stock tires and wheels spacers to prevent rubbing or should I go with the less wide tire and go astray from the stock recommendation?

 

[halik008]

none of these numbers you gave us really means anything in determining wheter they will rub on not......it's all about offest

stock offset is 46mm

halik

 

[wret]

I wouldn't mess around with the stock tires. They might fit with 10mm spacers but I think you would be unhappy with the torque shift.

 

[GSXTuner]

i have ran 245's on my car at one time with spacers.. i wisened up and took the spacers out and just put on 225's again

 

[DubV]

The offset has been the same for every generation right?

 

[dsmmyth]

I think you'll be fine with stock tires.

 

[wret]

I think you'll be fine with stock tires.

Can you clarify?

What you seem to be saying is that the car pictured is yours or one that you are familiar with and that is has 4g Eclipse wheels and tires fitted without modifications. Is this true?

 

[DubV]

Here's whats up. If I get the stock tires (235/45-18), it going to be more circumference than my stock setup and it gonna throw my speedo off by 5mph and cause rubbing (from what I've heard) plus raise clearence. If I get the less wide 225/40-18s, it's gonna go against stock recommendations but it will only throw my speedo off by .5 mph. Is it that big of a deal to get a different tire than recommended? By the way, I can't find the offset of the rims anywhere so I'm assuming that its the same as the 2g. By the way the rims are 18 x 8.

 

[halik008]

Here's whats up. If I get the stock tires (235/45-18), it going to be more circumference than my stock setup and it gonna throw my speedo off by 5mph and cause rubbing (from what I've heard) plus raise clearence. If I get the less wide 225/40-18s, it's gonna go against stock recommendations but it will only throw my speedo off by .5 mph. Is it that big of a deal to get a different tire than recommended? By the way, I can't find the offset of the rims anywhere so I'm assuming that its the same as the 2g. By the way the rims are 18 x 8.

check on the inside of the rim...all that info is usually casted into the rims on factory rims....

there are may people that are running 225's on 8 inch wide rims....but personally i have no experience with it

halik

 

[wret]

I don't see any way the stock tires will fit without rubbing, but this size way beyond the range of what I have dealt with. You said you "bought" them? Bolt one on and see if it spins.

I'm not sure what you mean by getting a different tire than what's recommended. 225/40/18's would be fine on those wheels and would be much closer to stock size.

There does not seem to be much data yet on the 4g wheel dimensions. Why don't call Tirerack? Judging by wheels they recommend for the 4g Eclipse, offset is similar to past generations.

 

[DubV]

All I needed to know is if you would choose the 225/40 over the 235/45. Thanks for the input.

 

[dsmmyth]

Can you clarify?

What you seem to be saying is that the car pictured is yours or one that you are familiar with and that is has 4g Eclipse wheels and tires fitted without modifications. Is this true?

No. My assumption is just based on alot of inferring. It's for sale.

http://www.dsmtuners.com/classifieds/showproduct.php?product=34408&sort=1&cat=4&page=2

Just by making notice of the fact that the ad does not say wheel spacers or any special tires, I am just assuming that all of the components are stock.

I also have a set of 2002 Spyder wheels on my 2G. Offset is similar (to past generations).

All I needed to know is if you would choose the 225/40 over the 235/45. Thanks for the input.

I, myself, do not know much. If you were to ask someone, however, wret's the right guy. I've done countless searches regarding my suspension and his posts have always been the most informative.

You might also PM Tredizzle to determine what his setup really is on those 4G wheels. No matter what, good luck with your decision.

 

[Ultimatedsm]

I would go 225/18/40, 45 aspect ratio is for 17 inch rims.

 

[wret]

No. My assumption is just based on alot of inferring. It's for sale.

Phew! I thought I was going to have to throw all my calculations out the window.

 

[DubV]

What tires would you throw on there? I'm thinkin about the Toyo Proxes 4 or the Kumho Ecsta SPT.

 

[turbotsi92]

Kumhos have really went downhill from my experience with them. I would not go with them. I went through 2 sets in a 6 month period, and my 3rd set(stupid for even buying them) cupped very bad with only a few thousand miles on them. Just my experience though. I have not used the Toyos.

 

[wret]

I'm heavily biased toward the Falken ST-115's I currently own. Not the best for racing but an outstanding road tire.

 

[speedy13]

I hate my falkens,but hey they came with the car,Kumhos are nice but their really soft and don't last for isht.If your N/T i wouldn't go any wider the 225(if it fits).Anything wider and your little 420 is gonna have a hard time moving those massive wheels and your car will feel sluggish off the line.My buddy had 18's on his 2gnt and he couldn't even burn out ,I had 225-50-16 and i would burn out all day and even chirp in second.(i know im ).j/k.well thats my .02

 

[DubV]

What about Nankang? I lookin at the NS II...

 

[Attack Eagle]

What tires would you throw on there? I'm thinkin about the Toyo Proxes 4 or the Kumho Ecsta SPT.

proxes 4s are for cruising, they are a soft sidewall tire geared for looks and comfort at the expense of performance.

BTW I would leave the 245s on.

IMO an 8 inch rim is much too wide for a 225 .
you might consider 235/40/18s which should be dead on Stock for AWDs, (accounting for the inevitable speedo optimism of 2-3 mph they all display) but everyone is always trying to fit 8" rims and 245s on DSMs.

Mind weighing one rim and tire combo and telling us how much they weigh? I really like em.

 

[DubV]

They weight about 25.5 pounds each. A 235/40-18 is much better than the 45 as far as staying close to the stock size. Check out this site for calculating tire size. Everyone has probably seen it already. It says miata but it doesn't matter. I still think a 235 would rub.

http://www.miata.net/garage/tirecalc.html

 

[Attack Eagle]

If your speedometer has been calibrated for 215/50 R 17 (25 x 8.46 x 17) tires, replacing them with 235/40 R 18's (27 x 9.25 x 18's) would result in the speedometer reading high by 0.25%.
www.dakota-truck.net/TIRECALC/tirecalc.html

in other words at 200.0 mph your speedo would read 200.50. Pretty dang close.

http://www.1010tires.com/WheelOffsetCalculator.asp

Section with on a 225 is measured on an 8 " rim (which is why it works so well on a 7 inch rim with some sidewall instead of being stretched out to the max), but a 235 will be about 2 tenth narrower than advertised when mounted on a 8 inch instead of a 8.5.
And remember also that we use a 47mm back space on a 17x6.5 so on an 18x8 the rim is farther in and out by 19 mm each way, with a 47 mm backspace. It would have the most potential for interference at the upright, and obviously they fit.

http://www.1010tires.com/WheelOffsetCalculator.asp

IN otherwords, run em see how they fit, and if needed try a 235 to get .2" and a slightly shorter tire that should eliminate all interference, but you may not be able to "tuck rim" like the overslammed 2wds in 16's with lowpros do.

 

[nRFenix]

I might be mistaken, but if your spedo is off by .5 because of your tire size, isn't there in increase somewhere? I thought I had read that before, but rims and tires aren't my best subject.

 

[Attack Eagle]

with a 235/40/18 there is a decrease of 1/4 of 1 percent.

if you are within 1/2 mph at 200 mph (like that would ever happen!) it's closer to a perfect match than Identical scandinavian twins.

 

[wret]

Section with on a 225 is measured on an 8 " rim (which is why it works so well on a 7 inch rim with some sidewall instead of being stretched out to the max), but a 235 will be about 2 tenth narrower than advertised when mounted on a 8 inch instead of a 8.5.

Ah, but on a 2g the critical variable isn't section width, it's tread width, which doesn't change (much) with wheel width.