How to pick out wheels for an rx8
02-03-2013, 09:45 PM
#52
J would you go 245/40/18 or 265/35/18 on a 18x9.5 +20
How much harder will the 265s be to fit ?? I dont really want to stretch to be honest, but if the amount of work between fitting the 265s compared to the 245s is alot then ill go 245. Ill be lowered on konis and tanabe springs. Thoughts
How much harder will the 265s be to fit ?? I dont really want to stretch to be honest, but if the amount of work between fitting the 265s compared to the 245s is alot then ill go 245. Ill be lowered on konis and tanabe springs. Thoughts
02-11-2013, 04:07 PM
#54
I'm curious as to why you don't recommend 225/45/18's though - That's what I'm currently running, on stock wheels, and going to be lowering soon via Powertrix coilovers. After speaking with a few members here who have the same specs (Or just know stuff), they said stock wheels with 225/45/18s won't cause the need for fender rolling / rubbing in general when lowered?
02-11-2013, 04:18 PM
#56
1. Are you seriously asking if stock wheels/tires will fit? If so we have bigger problems.
2. What the hell does lowered on coilovers mean? That's highly variable.
That tire height + a considerably lowered car can lead to problems in the front fenderwells.
2. What the hell does lowered on coilovers mean? That's highly variable.
That tire height + a considerably lowered car can lead to problems in the front fenderwells.
02-11-2013, 04:24 PM
#57
LOL I totally read all that way wrong. Having one of those days
2. As in, I'm putting on a coilover setup and setting it to be lower than stock? I understand what you mean, but I was meaning, well, just what I said. Could have been worded better, I'll give you that much.
And from your point #9, like I said I took it that going lower in general can cause problems. Like I said, just a mis-read or misunderstand of how things were worded. I was surprised when I read (or misread) what I did, hence why I asked. It confused me, but after re-reading it I got it.
Just misundestanding man, chill
EDIT: BTW, thanks for the info regardless. Good to know I just misunderstood something... thought it was the case but had to ask.
Last edited by FungsterRacing; 02-11-2013 at 04:27 PM.
03-21-2013, 07:20 AM
#60
275 vs 225
Here is some insight from my experience. My 8 is stock. I run a staggered offset 245/35/19 and 275/30/19 in the summer and the stock size in the winter. It is always a bummer when I put my summer tires on because the car has faster acceleration and gets better fuel economy with the winter (stock) tires. Handling is way better with the summer tires and it looks better, but the tail is much more lively with the stock size tires. The 275's just stick. no drifting, no peeling out, no drama. Regardless of speed, just point the car and mash the gas. Another thing to note is that it actually rides smoother with the bigger summer tires because they are heavy. If I had to do it again, I would go with 245/35/19 all the way around. Plenty of grip and easier to find tires. I have to use two different brands of tires to get the rolling diameter the same so that my ABS/Traction control don't go crazy. Hope this helps.
03-21-2013, 08:08 AM
#61
Here is some insight from my experience. My 8 is stock. I run a staggered offset 245/35/19 and 275/30/19 in the summer and the stock size in the winter. It is always a bummer when I put my summer tires on because the car has faster acceleration and gets better fuel economy with the winter (stock) tires. Handling is way better with the summer tires and it looks better, but the tail is much more lively with the stock size tires. The 275's just stick. no drifting, no peeling out, no drama. Regardless of speed, just point the car and mash the gas. Another thing to note is that it actually rides smoother with the bigger summer tires because they are heavy. If I had to do it again, I would go with 245/35/19 all the way around. Plenty of grip and easier to find tires. I have to use two different brands of tires to get the rolling diameter the same so that my ABS/Traction control don't go crazy. Hope this helps.
I hope you now realize the importance of minimizing unsprung weight since you mention that your winter tires have better acceleration than your summer tires, even though your rear summer tires have a 1.8% gearing advantage. This is due to the extra rotational inertia that your summer set has. The larger/wider wheels and tires are a disadvantage when considering rotational inertia.
Also....you mention that the car rides "smoother" with your summer set. If by smoother you mean like a Cadillac, then that makes sense. The heavier wheels/tires make it harder for your suspension to react, causing a delayed phase response in the suspension system. Not good for a performance car.
Thanks for adding your experience, and hope you learn for the future.
03-21-2013, 10:51 AM
#62
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Good to hear that you have realized that staggered is pointless on a low horsepower, near 50/50 weight distribution car. When you went staggered, you increased the car’s tendency to understeer, which is why you say the rear end is more stable.
I hope you now realize the importance of minimizing unsprung weight since you mention that your winter tires have better acceleration than your summer tires, even though your rear summer tires have a 1.8% gearing advantage. This is due to the extra rotational inertia that your summer set has. The larger/wider wheels and tires are a disadvantage when considering rotational inertia.
Also....you mention that the car rides "smoother" with your summer set. If by smoother you mean like a Cadillac, then that makes sense. The heavier wheels/tires make it harder for your suspension to react, causing a delayed phase response in the suspension system. Not good for a performance car.
Thanks for adding your experience, and hope you learn for the future.
I hope you now realize the importance of minimizing unsprung weight since you mention that your winter tires have better acceleration than your summer tires, even though your rear summer tires have a 1.8% gearing advantage. This is due to the extra rotational inertia that your summer set has. The larger/wider wheels and tires are a disadvantage when considering rotational inertia.
Also....you mention that the car rides "smoother" with your summer set. If by smoother you mean like a Cadillac, then that makes sense. The heavier wheels/tires make it harder for your suspension to react, causing a delayed phase response in the suspension system. Not good for a performance car.
Thanks for adding your experience, and hope you learn for the future.
what about going 245/35/17 when heading for the track to remove more unsprung weight?
03-21-2013, 10:57 AM
#63
J's #1 rule mentions that 17s are best for track. A 245/35R17 might be too short though. Most will run a 245/40R17 or 255/40R17, which is already shorter than stock. IThere shouldn't be a big weight difference between 245/35R17 and 245/40R17, but there is a big difference in overall gear ratio.
03-22-2013, 02:24 AM
#64
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J's #1 rule mentions that 17s are best for track. A 245/35R17 might be too short though. Most will run a 245/40R17 or 255/40R17, which is already shorter than stock. IThere shouldn't be a big weight difference between 245/35R17 and 245/40R17, but there is a big difference in overall gear ratio.
thanks JCrane82 !
09-05-2013, 08:30 PM
#70
Here is some insight from my experience. My 8 is stock. I run a staggered offset 245/35/19 and 275/30/19 in the summer and the stock size in the winter. It is always a bummer when I put my summer tires on because the car has faster acceleration and gets better fuel economy with the winter (stock) tires. Handling is way better with the summer tires and it looks better, but the tail is much more lively with the stock size tires. The 275's just stick. no drifting, no peeling out, no drama. Regardless of speed, just point the car and mash the gas. Another thing to note is that it actually rides smoother with the bigger summer tires because they are heavy. If I had to do it again, I would go with 245/35/19 all the way around. Plenty of grip and easier to find tires. I have to use two different brands of tires to get the rolling diameter the same so that my ABS/Traction control don't go crazy. Hope this helps.
Anyways, thanks again for the post. Also, big thanks to the OP for a great thread.
09-30-2014, 10:00 PM
#72
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17x8 should I go with +32 or +45 offset? Wheels are offered in both. I am looking to stay at stock ride height (too many bumps dips potholes and generally shitty roads in my area to survive long on a big drop. I already scrape in a few places @ stock ride height.
I am also looking to run 245/45/17 tires as I can get them all day for 225$ a set mounted/balanced/ with 50-75% tread someone that sells tires to my closest pull off place runs a lot of auto cross/hpde events.
I am also looking to run 245/45/17 tires as I can get them all day for 225$ a set mounted/balanced/ with 50-75% tread someone that sells tires to my closest pull off place runs a lot of auto cross/hpde events.
01-04-2015, 01:40 PM
#75
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I'm bumping this one because I wish this thread existed in all car forums. I was looking for this info on my S6 and couldn't find it anywhere. Great info here and very straight forward.