I am not sure if the RPF1 come in a 18x9 +30 but I could be wrong. Just looked at their site and there is a 18x9 +35 but that is in the silver. The 18x8.5 only came in +30 and +45 unless they dont list all their offsets on the site.

Hey buck you got to think about lowering. Once and if he lowers it the wheel will go inward due to the camber. When it does that the wheel will tuck in more giving it a flush look.

To the OP if you got a hook up on rpf1 you need to share with the rest of us.

 

atleast i dont have to explain offsets to you, but i've had my fair share of setup's and helped out even more people acquire perfect fitment on their custom wheels. I know exactly what will work and what will not.

some people's opinion of the tire "sticking out" is different than the next guys. And like Lumpia said, you have to factor in whether or not the car is going to be lowered, which is more than likely when going with aftermarket wheels.
-GP-

 

I wasn't trying to challenge your suggestions (and I don't think you took it that way), I just wasn't sure if the math worked. I've learned everything I know about offsets in the last couple of months, both here and other online sources, so I'm no expert. It just seemed that setup was cutting it a little close, but your experience should outweigh my math. And you and Lumpia are right, I didn't factor in the camber tilt, which will definitely help with the tuck.

So, can I jack this thread for a second to get your opinion on my problem? Lumpia, chime in if you've got an idea. I've got Coupe 18's for my AWD and I'm having a hell of a time deciding what tires to get. I want to keep the AWD fuse plugged in and I'm not planning on dropping it right now, but I do have a full set of Coupe springs sitting in my garage if you think that would help. I just don't want to buy a camber kit. I've got a winter setup on my stock 17's. What do you think of the following setups for summer?

235/45 F&R: (too wide in front? Could push rear out with 5 or 10mm spacer to keep it flush)
245/45 F&R: (again, too wide in front? Don't want water flying up beside car)
225/45F-255/40R: (too wide in rear? Will it fit safely on the 8" wheel?)

Any experience you've got would be helpful. I just don't know what to do.

 

Humm what tires do you have on now.

 

Extremely worn out Yoko AVS ES100's, 225/45-18 Front, 245/45-18 Rear with the AWD fuse pulled (tires came with Coupe wheels purchased here). Really don't want to run a non-equal setup, i.e. with the fuse pulled.

 

No worries, i'm just glad you took the time to learn offsets on your own and not ask a million questions and still not understand like the other 99% of people (not a stab at the OP, i know you're a noob and just want to learn) But as you've now seen, there are many, many factors that determine the correct offset. you have to take in to account the ride height, the desired camber settings, tire sizes, wheel widths.. every little change makes a big difference.

235/45 is the stock size on 05-06 sport sedans so it would work well, especially on a stock suspension setup, it would be pretty flush front and rear but you could throw a 5mm spacer on the rear.

 

That's the direction I'm leaning in. It will allow me to rotate front to rear, and it's stock diameter. And I can always push something out a little. It gets tougher when you want to push it back in. I only wish there was a better selection of tires in that size. The only ones I can find that are halfway decent are Toyo Proxes 4 or T1R, Yokohama W4S, Michelin Pilot Sport A/S Plus, Continental ContiSportContact2, and Hankook Ventus EVO V12. Any experience with any of these? I'm leaning towards the Yoko's.

Thanks to both of you for your insight.

 

If it's in your budget... the Michelins are hands down the best tire you can buy. That model yokohama isn't anything to rave about, neither are the Hankook or conti's. Either of the Toyo's are a decent choice. but this is coming from someone who drives the hell out of his car every day, so i need a really good tire.
-GP-

 

Hey I ask questions, because I am trying to work my way to get more flush and aggressive. LOL Its alot easier with rwd cars. I think if I do go aggressive I am going to have to pull the fuse so I can run 225 f and 245 rear.

 

I drive mine every day, and I do like to push it a little. I really only need them to last maybe 22-24,000 miles, i.e. 3 summers. I'll buy another set then (I've got a winter setup on my stock 17's). But thanks for the input. I was leaning Toyo for a while, but then read a few good reviews of the W4S. I never really considered the Hankooks. I'll look again at the Toyos and re-consider my budget for the Michelins.

In hindsight, I don't think I would have bought these Coupers. I would have looked for some Sedan 18's or gone aftermarket. The offset/tire combination is just too restrictive with the AWD. Sedan 18's and I get 245/45 all around, aftermarket and I do the 225-255 F-R setup.

Anyhoo, thanks for the feedback. OP, sorry for jacking.

 

we totally jacked his tread. But for Grant I got a question us awd guys would love to know. If I was to run 19x8.5 with a 245/35 on there and then ran a 19x10 with a 245/35 would the rolling diameter be the same or with the stretch shrink the diameter down some? Because if it is the same then I am doing a set up like that.

 

the stretch would bring it down a little bit. You could do a 255/35 in the rear and it would be pretty darn close after the stretch.
-GP-

 

humm it would bring it down, so maybe if I put a 225/40 on a 8.5 and maybe stretch a 245/40 on a 10 that would be closer than it would be on a non stretch.

 

You can still run a 245/35 in the front. the stretched 255/35 in the rear will go down to about the same rolling diameter as the 245/35 up front.
-GP-

 

How about this combination:

235/40-19F = 26.4"
with
265/35-19R = 26.3"
or
275/35-19R = 26.6"

It's very close to stock diameter and none are really stretched onto the wheels. I don't know why you'd run a narrower tire in the back so it would shrink down to the front size when you can easily bump up the front sidewall a little and put a normal tire size in the rear. Besides, the 245/35-255/35 combo starts off more than 2% smaller than stock (25.8").