I am a 70+ woman who hasn't changed a tire in over 50 years - not sure I have the strength or courage to even attempt it now. I love my NX 350h but feel like it doesn't drive as smooth as I wish. Many people on this forum have mentioned that the run flats don't deliver as satisfying feel as non-run flats so I have been looking forward to switching to regular tires. When buying new tires, I plan to also order the modern spare that people here have recommended. My thought is to just order the tire and carrying case - none of the tools needed to actually change the tire. If I needed a tire changed, I would call for the emergency service provided by my insurance company. I'm thinking that if I have the modern spare, the person sent out to help me would have the necessary tools to change the tire. Is this a correct assumption? Thank you for your guidance.

 

Yep they absolutely should, I think that's a solid assumption. If you had to call roadside service just make sure to tell them you don't have a jack or tools to remove the tire.

Luckily tire failures are a lot fewer these days than they were 20 years ago as well.

 

If you're getting the Modern Spare, I would recommend getting the tools as well. They fit inside the middle of the spare tire so there is no extra bulk when you have everything inside the carrying case. You should be prepared for a situation where emergency services cannot reach you (or would take a prohibitively long amount of time) but an able bodied adult is around to help you change the tire. Just my two cents.

 

Hello,
You (and DaveGS4) are absolutely correct when saying that Emergency Services would have all necessary tools to change your wheel. But I'd recommend getting necessary tools as well, because:
* They are not that expensive (only additional $60);
* I don't think that you could purchase a Spare with a Carrying Case (Modern Spare don't have that option Spare Tire Kits. 2022-'25 Lexus NX350h, NX-Series | Modern Spare );
* They fit into the standard cut-off places in the car;
* They are very handy if (God forbid) you are stuck on a road with a punched tyre and no phone service;

When/if purchasing a new set of tyres and a spare wheel, please remember - 2-nd Gen NX350h does not have a space to keep a Spare in the car (under the baggage compartment flooring). If you are planning to carry a spare wheel in your car boot, please ensure that it secured properly.


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2022 NX350h F Sport 2WD
2017 NX300h Sports Luxury AWD

 

My wife and I have over 1.5 million miles driven between both. I did a lot of driving when working. In those miles one blowout. All the rest were nails and slow leaks. I keep a bicycle tire pump in the trunk. When a slow leak just pump it up and head to a tire company. There are also electric powered pumps one can get. Our 23 NX with runflats will be replaced with Michelin Primacy tires which are on my 2024 RX 350H. Incredibly quiet with a 55,000 mile wear warranty. Averaging 38 mpg RX 350h.

 

We bought a slime flat tire kit with sealer for the NX with Run flats (and normal winter tires). Hopefully we will never use it, but if we need it I am hoping it works. It comes with the pump and sealer as one unit.

 

It's been a while since we ordered our Modern Spare but don't you also need to be sure to order the lug bolts? I know we need different lug bolts for their rims, I just don't recall if they come with it or if it's an add-on.

 

So glad to hear you're proactive about addressing the 'shortfall' on Lexus for not providing a good ole spare tire in almost all of the current NX model lineup HarleyWho. I'm leaning toward regular replacement tires soon on my '22 NX350h as well. I have purchased a good quality tire repair kit off of Amazon that get's great reviews and has a few features I like. The sealant that they provide will not harm the TPMS (tire pressure monitoring system) sensors contained within the valve stem that determines your tires air pressure. Each one of these is probably worth about $70 from dealer to replace. The sealant is also water soluble and not toxic so when you get to a tire repair shop they can hose this stuff out before they attempt to patch the hole. The sealant does expire and they admit that it does, and date stamp the container so that after 6 years you will know that you have to go get some fresh sealant. Instructions are clear, you also have a flashlight and backlit LED for the pressure gauge for the 12 volt air pump. This company provides these kits as original equipment on a number manufacturer's vehicles.


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If drive quality is important to you, I think you should change the tires to non-run flat tires. My daughter changed to Cross Climate 2 when her 2025 NX 450h+ was at 1500 miles. She told me the difference in smoothness was like "night and day."

If you are going to buy a Modern Spare, I think you should buy the tool kit. It does not add that much cost and weight to the whole deal. And if the person who changes the tire for you need the tools, (s)he'll have everything at hand. Service trucks are not always available or when available are not always fast. I myself has changed tires a few times for strangers on the road and in parking lots.

A lady friend of mine last month had a flat in San Francisco. She had to wait 1 hr for the service truck to arrive. Meanwhile, there were many people stopped offering help, but there was nothing they could do without a spare tire (and the tools).

 

Best advice you’ll get. I have the cross climate as well and they are excellent.