Your question is a bit confusing and lacks information that could affect the answer.
You state that 35-50mm is allowed but then ask about a "higher" offset (45mm) that is within that range?
Wheels with more offset than OEM will position the tire further inboard on the car. A 10mm increase in offset will move the center of the wheel 10mm in.
But if you are concerned with clearance to the struts or wheelwell the wheel width (and tire size) affects that as well.
Increase the offset by 10mm and the increase wheel width by 1" and you have moved the inner edge of the wheel in by 10mm + 1/2".
Changing the offset also can change the loads on the bearings. I think the general rule of thumb these days is to stay within 10mm but don't quote me on that.

 

I didn't provide enough information. I've read online that the allowance is between 35-50mm offset. I've also read that you want to stay within +/-5mm offset, so I'm getting conflicting information. This is why I'm curious what anybody else has experienced using a +45 offset. I'll be using 17" rims with 225/65 R17 tires I'm hoping that has enough clearance.

 

The stock Toyota 19" wheels are ET45. So yes, 17's with that ET will work.
My 20's are ET40.

 

Most 17" diameter wheels will clear the calipers of most RAV4.5 models. The Prime has larger calipers that the ICE/Hybrid but I run 17" Winter alloy wheels/tires on my R4P and still have 3/8" clearance to the calipers so if you have the ICE or Hybrid models you shouldn't have caliper clearance issues and even the R4P can use most 17" wheels. 225/65R17 are almost identical to the 225/60R18 OEMs I have for my R4P which have plenty of room (calculator: Tire Size Calculator ). If you buy Toyota wheels they will have a 60.1mm bore. Other brands will work although hub-centric rings are cheap and a good idea if the bores are different (60.1 is about the smallest they make for this bolt pattern). Up to +45 offset probably wouldn't cause you clearance problems but I would stick within +/- 10mm for Winter wheels myself and even stick within +/- 5mm offset if I was going to run them most of the year. There just isn't a good enough reason IMHO to take the offset further than that away from the design spec when there are wheels within that spec available. I suspect the conflicting information regarding offset is due to variations in risk (some people worry about the change in bearing loads more than others). 7" - 8"h wheels should work fine with most OEMs for that tire size being 7" or 7-1/2" wide. Lug nuts should match the wheel type and have sufficient thread engagement.

 

Do you think using a +45 offset 8" wide rim with 225/65R17 will have enough clearance?

 

I think there is a good chance you would see rubbing on the strut or inner wheelwell with that combination even though the tires are OEM size. Both the offset change and wider wheel push the inner side of the wheel in towards the struts and inner wheelwells. A spacer could be used to push the wheels back out if you really want to run wide wheels with larger offset.

 

Hi all, need advice based on either experience or exposure to the subject.
Just got my 2024 Toyota RAV4 XLE (FWD, non-hybrid) and doing a few modifications; MF exhaust system, Takeda CAI, Tanabe FSB & maybe/not sure on FS210 lowering springs on GR-2s yet.

Q: The car comes with 17x7, ET35, 225/65's...... Was planning on upgrading to lighter set of 19s eventually and just came across a killer deal on Forged Apex Wheels (however🥴) they're 19x8.5, ET23 if I wrap them in 235/55 Conti's DWS 06+, will they fit the vehicle, if so would I 'have to' and/or 'need to' do any suspension adjustments(?)
Any real knowledge / educated guess welcomed🙏🏻.

 

The inner lip of the rim will protrude 7 mm further into the wheel well, and the outer lip will be about 31 mm further out than you now have. This may mean that under full suspension compression, the wheel well lip may hit the tire. This may be one of those “you have to try it and see” situations.

No suspension adjustments are needed if your alignment is already good.

 

Slightly off topic- did you install the takeda cai on your hybrid? I’m interested in doing the same