What offset? RPF1 18x9.5
Mar 6, 2011, 01:44 PM
#1
What offset? RPF1 18x9.5
Whats up, I really posted this thread for more of an opinion rather than informative purposes. I am looking to purchase a set of wheels for summers and possibly the track when I can find time and money to try it. I am set on the rpf1's they seem to be one of the best bang for buck wheels around. I am confused though on what offset will be best both aesthetically and performance wise. I like the way the +15 look with the rim seeming to be more deep dished but I am also not crazy about the fact I have to stretch and downsize the width of the tire to make them fit. I feel downgrading the handling of this car defeats its purpose. I would like to stay with a 255. As far as the +38 offset it seems that this sort of changes the look of the wheel making it more shallow and I am not too crazy about using a spacer since I have heard its a week point. Does anybody have any side by side pics of the rpf1's in both offsets and what do you think would suit me best considering my concerns and any info on tire sizes? Any close up pics of the +38 would be great they seem to be less popular.
Mar 6, 2011, 05:23 PM
#2
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a member is selling a set in the for sale forum, they're green but you can see how they look
https://www.evolutionm.net/forums/sa...-18-tires.html
https://www.evolutionm.net/forums/sa...-18-tires.html
Mar 7, 2011, 12:16 PM
#4
Of the 18x9.5's I have in an EVO bolt pattern there is a 15mm, 38mm, and 45mm offset offered. Of the three the 15mm would be the only one to clear brakes w/out a spacer. How much of a spacer you'll need for the others to work properly I honestly can't say.
Mar 7, 2011, 12:49 PM
#6
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...they don't make a +20 offset in 18x9.5
if you dont want rub go with the +38 with a minor drop and 20mm bolt on type spacer (kics or ichiba). You'll more then likely rub the the fenders with 255+ tires and a +15 offset.
I went with a 17x9.5 +38 with 20mm hub-centric spacer up front type of setup to avoid rubbing. (GTWorx springs) I feel this is a more ideal track setup.
if you dont want rub go with the +38 with a minor drop and 20mm bolt on type spacer (kics or ichiba). You'll more then likely rub the the fenders with 255+ tires and a +15 offset.
I went with a 17x9.5 +38 with 20mm hub-centric spacer up front type of setup to avoid rubbing. (GTWorx springs) I feel this is a more ideal track setup.
Mar 7, 2011, 01:03 PM
#7
From experience. Get the 38mm offset and get a 20mm hub centric spacer for the front and roll the rear fenders
If you get the 15mm it will not fit in the back without a serious rear fender mod
If you get the 45mm you'll need a 30mm spacer in the front and a 10mm in the back..
I didn’t choose the 15mm in front and 38mm in back because I like to rotate my tires with out a tire changing machine.
If you get the 15mm it will not fit in the back without a serious rear fender mod
If you get the 45mm you'll need a 30mm spacer in the front and a 10mm in the back..
I didn’t choose the 15mm in front and 38mm in back because I like to rotate my tires with out a tire changing machine.
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Mar 7, 2011, 02:14 PM
#10
https://www.evolutionm.net/forums/9101074-post1700.html
Not as deep. But they still look good and if you go to 17 wheel; They don't look as deep but much better for performance.
Not as deep. But they still look good and if you go to 17 wheel; They don't look as deep but much better for performance.
Mar 7, 2011, 04:42 PM
#11
Can't find anybody that carries the +38offset in sbc. I might just have to get the +15 and try a 245 series tire.... I will rent a fender roller and make it work. I live in an area with horrible roads so I am a bit nervous. I like the silver finish but it doesn't do gg justice. I like function and form since I am not a big track enthusiast, yet lol...
Mar 7, 2011, 09:58 PM
#12
The +38 with a 20mm spacer in the front makes the most sense. Not only can you rotate them but without the 20mm spacer in the rear, it narrows the track width relative to the front which I've noticed some guys have been doing in order to balance out the car and eliminate understeer. I believe you will need like a 3-5mm spacer in the rear though to keep the tire off the torque arms if you put some real meat on them. Not sure if 265s will need that spacer or not, I beleive 275s do though.
I personally got the +15 offset. I already have +22 on the car clearing 275s. I figure 7mm more offset is just a couple more blows with the hammer to make them fit at this point... If I were to buy again though, I'd probably go to the +38 and spacer setup just because it gives you some ability to adjust track width in the rear.
I personally got the +15 offset. I already have +22 on the car clearing 275s. I figure 7mm more offset is just a couple more blows with the hammer to make them fit at this point... If I were to buy again though, I'd probably go to the +38 and spacer setup just because it gives you some ability to adjust track width in the rear.
Last edited by 03whitegsr; Mar 7, 2011 at 10:02 PM.
Mar 8, 2011, 06:37 AM
#13
The +38 with a 20mm spacer in the front makes the most sense. Not only can you rotate them but without the 20mm spacer in the rear, it narrows the track width relative to the front which I've noticed some guys have been doing in order to balance out the car and eliminate understeer. I believe you will need like a 3-5mm spacer in the rear though to keep the tire off the torque arms if you put some real meat on them. Not sure if 265s will need that spacer or not, I beleive 275s do though.
I personally got the +15 offset. I already have +22 on the car clearing 275s. I figure 7mm more offset is just a couple more blows with the hammer to make them fit at this point... If I were to buy again though, I'd probably go to the +38 and spacer setup just because it gives you some ability to adjust track width in the rear.
I personally got the +15 offset. I already have +22 on the car clearing 275s. I figure 7mm more offset is just a couple more blows with the hammer to make them fit at this point... If I were to buy again though, I'd probably go to the +38 and spacer setup just because it gives you some ability to adjust track width in the rear.
Mar 8, 2011, 06:41 AM
#14
another quick question! What do you think would be a good tire height with the +38 and +15??? Would a 40 series tire be safer and less prone to bend the rim and ride smoother or should I get a 35 series for clearance purposes? I live in an area with sh&tty roads as well.
Mar 8, 2011, 07:02 AM
#15
+15 will be more likely to rub with a 245/40, so perhaps look for a 245/35. At this point you're gonna run a thin tire regardless, so you will have a much higher chance of bending a rim anyway. The +38's have a nice face IMO and I can hardly tell the difference between the +15 and +38. I would personally go with the +38 because I like running large tires(255-275).
Last edited by L888Apex; Mar 8, 2011 at 07:04 AM.