RPF1s!!!!!!!

Discussion in 'Mazdaspeed 3/6 Wheels & Tires' started by GE3K@Hypnotictuning, Feb 10, 2016.

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  1. alexwlwsn

    alexwlwsn Greenie Member

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    At this slightly lowered height with a 245/45r17 on a 17x9 +45 RPF1 I never rubbed with people in the back. Even squatting doing a pull with passengers, no rub. Just a slight roll in the rear too.

    IMG_20170117_134025078.jpg
     
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  2. Finch204

    Finch204 Greenie Member

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    Good to know. For some reason, I am really drawn to the 17x9 RPF1 look on the Speeds. Might be a setup I will try in the future, but I still need to upgrade my suspension first.
     
  3. Skiian

    Skiian Greenie Member

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    I sat pretty low on my rpf1s with 245/40 and never rubbed once even when I had ppl in the rear. Though my suspension is pretty stiff
     
    Last edited: Feb 16, 2017
  4. GCPhotographers

    GCPhotographers Greenie Member

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    225/45/17 Toyo Proxes on 17×9 45 with BC BR coilovers on stock set up and 5.5 spacers front and rear from Carquest. I am looking to change this set up especially the spacers. I know majority go with JBR 5mm spacers but looking to see what other companies would be good for this set up.
     
    GCPhotographers, via a mobile device, Dec 10, 2018
    #64
  5. dagrimey1

    dagrimey1 Neva' Slippin' Silver Member

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    225 tire seems to be small for that width, why not a 245 or at least 235.
     
  6. gotovato

    gotovato Silver Member

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    17 x 9, +35 up front, +45 in the rear, (i have 2 full sets)
    255/40/17 RE71R tires
    No spacers required, no rubbing up front, minor rubbing in the rear when theres alot of weight back there
    this is my street/track setup, no rubbing on track under any load yet
    lowered on ST coilovers
    3* of camber up front thanks to corksport camber plates


    IMG_4566.JPG
    IMG_4565.JPG
     
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  7. DubC

    DubC Greenie Member

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    just ordered a set of 17x9 +45.

    i think i've read so many posts that i'm confusing myself and can't really tell what i might need to do depending on tire size. i ordered 5mm spacers that i assume i'll put on the front.

    i have stock suspension for now. at most what i'd do is perhaps some swift springs in the future. never coilovers. i don't really daily this i guess. switch off with my truck and i rarely have a passenger. i doubt i ever have rear passengers again. i haul little to nothing in the car (in regards to weight in the back).

    so my questions are as follows:

    1. what tire size can i get without rolling the rears? i have seen everything from 235-255 and some pu owners have said they didn't roll. i will roll if i have to but if i don't need to then that's better for all!
    2. if i didn't roll rears now and got away with it would i have to anyways if i put the swift springs on?
    3. tire profile - 40 or 45? i know there are pros and cons to both. i'm sort of looking at it from a fitment perspective.

    i know much of this personal preference of the look and how it feels/drives. i had 245/40/17 in my head for awhile but @JohnnyTightlips said do 45s or he'd punch me in the face. might be worth it.

    anyway...thoughts and/or words from those who have these is appreciated. cheers.
     
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  8. JohnnyTightlips

    JohnnyTightlips Motorhead Silver Member

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    Do 45's or I will punch you in the face.
     
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  9. dagrimey1

    dagrimey1 Neva' Slippin' Silver Member

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    Get PF01 step up to this century.

    Can't believe I using Tapatalk again!
    [​IMG]
     
    dagrimey1, via a mobile device, May 24, 2019
    #69
  10. DubC

    DubC Greenie Member

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    too late. already bought the rpf1s. i'm good wid it. :)
     
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  11. SharksInSpace

    SharksInSpace Planets and shit. Silver Member

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    RPF Gang 4lyfe. I run a 5mm spacer up front to clear coils with 245/45/17 tires. Out back I have a mild fender roll and 245/40 that came on the wheels. Might bump to 255/40 next time I need replace to them.
    20190416_074411.jpg
     
  12. DubC

    DubC Greenie Member

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    You have a side profile shot? Those are the two profiles I’m lookin at :)


    Sent from my iPhone using Tapatalk
     
    DubC, via a mobile device, May 27, 2019
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  13. DubC

    DubC Greenie Member

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    Anyone move their TPMS sensors from stock wheels to rpf1s? Wasn’t sure if there would be any fitment issues by doing that.


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    DubC, via a mobile device, May 30, 2019
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  14. SharksInSpace

    SharksInSpace Planets and shit. Silver Member

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    Not offhand on my 2nd gen but i can get one. i am pretty low on coilovers, though.

    This was the same wheel/tire setup on my 1st gen, lowered on Swift springs.
    1522281263184.jpg

    Also, tpms should pretty much be universal as far as I know.
     
  15. DubC

    DubC Greenie Member

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    Nice :) I ended up with 245/45s.


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    DubC, via a mobile device, May 30, 2019
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  16. DubC

    DubC Greenie Member

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    i thought i was told that depending on the angle of the rim that some may or may not fit. i dunno. guess we'll see!
     
  17. BuddyAure

    BuddyAure Greenie N00B Member

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    Apologies for the necro on this; but I just can't seem to answer my own question through Googling...

    I am going with a 17x9 RPF1 in Gold against Crystal White Pearl Gen 1, but having difficulty coming up with the tire sizing. The following posts are probably the most poignant I've seen, and really have me backing off the 255/40 in lieu of 245/45.


    @JohnnyTightlips @DubC
    Aside from being punched in the face, what are the considerations I should have when choosing between 255/245 as well as 45/40?

    I understand with either I'll likely have to roll the rear fenders, and get 5mm offsets in the front, I am under the impression the 45 will be more comfortable than the 40 as well.

    CorkSport coilers are coming after these, I am almost full bolt-on sans exhaust, and I don't really plan to do autocross.
     
    Last edited: Aug 11, 2023
  18. Mauro_Penguin

    Mauro_Penguin Punk in Drublic. #BlackLivesMatter Motorhead Platinum Member

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    255 will give you 10mm more tread, over the 245. Might as well get as much as you can.

    40 vs 45, the 45 will give you just a couple of mm's of height, vs the 40. Honestly kind of a minimal difference between the 2.

    I run 255/40r17 on my rpf1's. Last 2 sets of tires were the same size too. No issues what so ever.

    So really up to you, and maybe whichever you can get a better price on.
     
    Mauro_Penguin, via a mobile device, Aug 10, 2023
    #78
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  19. BuddyAure

    BuddyAure Greenie N00B Member

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    Spent all day reading and reviewing, talking with some folks in the shout box (Thanks @KiwiFlavor @Awafrican).

    Wanted to post what I have found purely as knowledge-share in case anyone in the future is interested in the 17x9 RPF1 fitment details.

    Speedo Considerations:
    Sizing Considerations:
    Unknowns:
    • I can't say with certainty but comfort itself seems to be negligible at 8mm difference in sidewall.
    • Having a turbo, 255 puts more tread to the pavement, but I have read it can introduce sloppiness during turning to which I'm not certain how much it will directly affect the daily drive between the two.

    Based on all I found, it would seem that 245/45 has a greater change to rub than 255/40 would?
     
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  20. Mauro_Penguin

    Mauro_Penguin Punk in Drublic. #BlackLivesMatter Motorhead Platinum Member

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    255 ends up being right on the edge of thr rim.

    Regarding wide tires making your turning sloppy, you have to get like a 275 tire which pokes out way passed the lip of the rim. If that was the case, it makes all your handling sloppy, not just your steering.

    One thing to note, whether 245 or 255, you will notice some mild understeer from going into a wider tire than stock. Still worth the trade off in my opinion.
     
    Mauro_Penguin, via a mobile device, Aug 11, 2023
    #80
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